Atrial Fibrillation
 RESOURCES FOR PATIENTS

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FREQUENTLY ASKED QUESTIONS
    (A-Fib.com complies with the HONcode standard for trustworthy health information. But the HONcode reviewers indicated that some of the FAQs questions were not sourced/referenced. Please be advised that some of these answers are similar to advice or support columns rather than referenced articles.)
    For those who have visited the FAQs section before, the questions have been re-arranged by topic. The topics are:
    Dealing with an A-Fib attack or diagnosis for the first time
    Coping with A-Fib
    General A-Fib Questions
    Treating or Curing A-Fib
    Medications For A-Fib
    Warfarin (Coumadin)
    Pulmonary Vein Ablation (Isolation) Procedures
    Chronic (Persistent) A-Fib

These first questions deal with the shock of having an A-Fib attack or diagnosis for the first time.

1. "Around 11:00 pm I was getting ready to go to sleep when my heart started going crazy, like it was trying to jump out of my chest. I panicked and drove to an Emergency room. But by the time I got there, my heart was normal again. What happened to me? How much trouble am I in?"
    
2. "Did I cause my Atrial Fibrillation? Am I responsible for getting A-Fib?"
    
3. "What caused my A-Fib?"
    
4. "Is Atrial Fibrillation a prelude to a heart attack?"
    
5. "Can I die from my Atrial Fibrillation?"
    
6. "My doctor says I have Atrial Fibrillation. Could it be something else? Should I get a second opinion?"
    
7. "Will my A-Fib go away on its own?"
   
   The following questions deal with coping with A-Fib.
    
8. "What can I do for my husband (wife) when he (she) has an Atrial Fibrillation episode?"
    
9. "My husband's A-Fib is getting worse. When should I call Emergency and/or take him to the hospital? I'm petrified with fear for him. Our doctors say don't worry unless he shows signs of a heart attack or stroke."
    
10. "Can I exercise if I have Atrial Fibrillation? Should I exercise? Should I cool my sex life?"
     
11. "I have a lot of stress at work. Does this stress cause or trigger my A-Fib?"
     
12. "Can I drive my car if I have Atrial Fibrillation?"
     
13. "How can I tell when I'm in A-Fib or just having something like indigestion?"
     
14. "Is there anything I can do to get out of an A-Fib episode? Is there any way to predict when I'm going to have an A-Fib attack?"
     
15. "I have A-Fib. In case of an emergency, should I carry a wallet card or a medical bracelet? What information should I put on it?"
     
16. "Is drinking coffee (tea, cokes, other products with caffeine) going to make my A-Fib worse or trigger an A-Fib attack?"
     
17. "Is smoking medically prescribed marijuana or using Marinol going to trigger or cause A-Fib?"
     
18. "Can excess iron in the blood (Iron Overload Deficiency) cause Atrial Fibrillation? How do I know if I have IOD? What can I do about it?"
     
19. "Can too little iron in the blood (Anemia) cause Atrial Fibrillation? What can I do about it?"
    
    General A-Fib questions.
     
20. "Why does so much Atrial Fibrillation come from the Pulmonary Vein openings?"
     
21. "Is my Atrial Fibrillation genetic? Will my children get A-Fib too?"
     
22. "Why do older people get Atrial Fibrillation more than younger people?"
     
23. "Is Atrial Fibrillation different from what doctors call Paroxysmal Supraventricular Tachycardia?"
     
24. "What is the difference between "Adrenergic" and "Vagal" Atrial Fibrillation? How can I tell which one I have? Does it really matter? Does Pulmonary Vein Ablation (Isolation) work for Adrenergic and/or Vagal A-Fib?"
     
25. "I had a single episode of A-Fib and was successfully converted with medication (Cardizem drip). I had only four hours of sleep, had eaten no breakfast, but did have an extra large coffee. I also had watery diarrhea and was somewhat dehydrated. Is it possible that my electrolytes were out of whack and led to the A-Fib episode? I haven't felt any A-Fib symptoms since.    
        I'm wondering if it's possible to have a single A-Fib attack and not have any others."
     
26. "I've had A-fib for several years and have read that it may produce fibrosis and collagen deposits in the atrium (See: A-Fib Induces Fibrosis). How can I determine or measure how much fibrosis I have? Can something non-invasive like a CT scan measure fibrosis?"
 

The following questions deal with treating or curing A-Fib.
 
27. "Is Atrial Fibrillation curable? Or can you only treat or control it?"
     
28. "Which is the best A-Fib treatment option for me?" (You may need to read the complete Cures section of A-Fib.com to familiarize yourself with the various treatment options, if you haven't done so already.)
     
29. "Is there a diet I could follow which would cure my A-Fib?"
     
30. "Are there exercises that will help eliminate my Atrial Fibrillation?"
     
31. "I like my Cardiologist, but he has not talked about me seeing an Electrophysiologist. Should I ask for a second opinion from another Cardiologist?"
     
32. "I have a lot of extra beats and palpitations (PVCs and/or PACs) which are very disturbing and frightful. They seem to proceed an A-Fib attack. What can or should I do about them?"
     
33. "I have a defective Mitral Valve? Is it causing my A-Fib? Should I have my Mitral Valve fixed first before I have a PVA?"
     
34. "I have silent A-Fib (A-Fib without any obvious symptoms). It was discovered by accident when I was getting a physical. Is there any way to tell how often I get A-Fib or how long the episodes last? What kind of A-Fib monitors are available?"
     
35. "I've had Paroxysmal (occasional) A-Fib for a couple of months, but the A-Fib episodes seem to be getting longer and more frequent. I'm worried about going into permanent (Chronic) A-Fib which I know is harder to cure. How long do I have before I go into permanent A-Fib?"
    
    The following questions deal with medications for A-Fib.
     
36. "Which medications are best to control my Atrial Fibrillation?" "I have a heart condition. What medications work best for me?"
     
37. "Is the "Pill-In-The-Pocket" treatment a cure for A-Fib? When should it be used?"
     
38. "I take atenolol, a beta-blocker. Will it stop my A-Fib."
     
39. "I've been on amiodarone for over a year. It works for me and keeps me out of A-Fib. But I'm worried about the toxic side effects. What should I do?"
    
            Warfarin (Coumadin)
     
40. "Should anyone who has A-Fib be on the blood thinner warfarin (Coumadin)?"
     
41. "Which is the better anticoagulant to prevent stroke---warfarin (Coumadin) or aspirin? What's the difference between warfarin and Coumadin?"
     
42.  "What are my chances of getting an A-Fib stroke?"
     
43. "I'm worried about having to take the blood thinner warfarin (brand name Coumadin). If I cut myself, do i risk bleeding to death?"
     
44. "I am on Coumadin (warfarin) to thin my blood and prevent A-Fib blood clots. Do I now need to avoid foods with Vitamin K which would interfere with the blood thinning effects of Coumadin?"
     
45. "The A-Fib.com web site claims that an A-Fib stroke is often worse than other causes of stroke. Why is that? If a clot causes a stroke, what difference does it make if it comes from A-Fib or other causes? Isn't the damage the same?"
     
46. "I just had an Electro-Cardioversion. My doctor wants me to stay on Coumadin for at least one month. Why is that required?
        They mentioned something about a "stunned atrium." What is that?"
     
47. "I know I'm at risk of an A-Fib stroke, but I hate taking Coumadin. Aren't there any natural remedies or supplements I could take?"
    
    The following questions deal with Pulmonary vein ablation (isolation) procedures.
     
48. "I'm getting by with my Atrial Fibrillation. With the recent improvements in Pulmonary Vein Ablation techniques, should I wait till a better technique is developed?"
     
49. "Are there different types of "Pulmonary Vein Ablation (PVA)?" Are they different than "Pulmonary Vein Isolation (PVI)?"
     
50. "I've heard of ablation catheters that use Cryo (freezing). Are they any good or better than the RF (Radio Frequency) catheters in use today for PVA(I) ablations?"
     
51. "How dangerous is a Pulmonary Vein Ablation? What are my risks?"
     
52. "I know I need a Pulmonary Vein Ablation (Isolation) procedure to stop my A-Fib. A-Fib destroys my life. I can't work or exercise, and live in fear of the next attack. And antiarrhythmic meds cause me bad side effects. But I'm worried about being exposed to radiation during the ablation. How dangerous is the fluoroscopy radiation during an ablation?"
     
53. "I have serious heart problems and chronic heart disease along with Atrial Fibrillation. Would a Pulmonary Vein Ablation help me? Should I get one?"
     
54. "I have an enlarged heart due to years of A-Fib. I was told I can't have a Pulmonary Vein Ablation (Isolation) procedure. Why is that?"
     
55. "I am 82 years old. Am I too old to have a successful Pulmonary Vein Ablation? What doctors or medical centers perform PVAs on patients my age?"
     
56. "I had a successful Pulmonary Vein Ablation (Isolation) procedure a year ago. I'm in normal sinus rhythm and have been A-Fib symptom free. Will my A-Fib eventually return over time, or am I permanently cured?"
     
57. "I just had a Pulmonary Vein Ablation (Isolation) procedure, but I still don't feel quite right? How long does it take before I know the procedure was a success?
        Also, I've got bruising on my leg, my chest hurts, and I have a fever at night. Is this normal?"
     
58. "Where can I get more information on what was done to my heart during my Pulmonary Vein Ablation?"
     
59. "I've had a successful Pulmonary Vein Ablation to cure my A-Fib. Do I still need to be on anticoagulants like Coumadin or aspirin?"
         "Which is preferred to prevent the possibility of a stroke in the event my A-Fib re-occurs---a baby aspirin dosage of 81 mg or a 325 mg?"
     
60. "I just had a Pulmonary Vein Ablation. But my A-Fib feels worse and is more frequent than before the ablation. I feel terrible, but I do seem to be getting better each week. Is my ablation a failure?"
     
61. "I am having a Pulmonary Vein Ablation next week for my A-Fib. Because i love to exercise, I am very curious as to what and how much physical activity I can participate in after the procedure. Everything i read says 'You can resume normal activity in a few days.' But i know that what is normal is not normal for me. Is there a range of BPM (beats per minute) to keep my heart within? Light walking? Exercising/light weights in the gym? Is there a common road to recovery for those of us who are very physically active?" (Thanks to Monique Van Zeebroeck for this question.)
    
            Chronic (Persistent) A-Fib
     
62. "I have Chronic Atrial Fibrillation (the heart remains in A-Fib all the time). Am I a good candidate for a Pulmonary Vein Ablation? Will it cure me? What are my chances of being cured compared to someone with Paroxysmal (occasional) A-Fib?"
     
63. "I'm eighty years old and have been in Chronic A-Fib for 2 years. I actually feel somewhat better now than when I had occasional (Paroxysmal) A-Fib. Is it worth trying to get an ablation to cure my Chronic A-Fib?"
     
64. "I am in Chronic (all-the-time) A-Fib. I feel tired and a little light-headed, probably because my atria aren't pumping properly. Is there any way I can improve my circulation, without having to undergo a Catheter Ablation (poor success rate and risky at my age) or Surgery (even more risky)?"

The following questions deal with the shock of having an A-Fib attack or diagnosis for the first time.

  1. "Around 11:00 pm I was getting ready to go to sleep when my heart started going crazy, like it was trying to jump out of my chest. I panicked and drove to an Emergency room. But by the time I got there, my heart was normal again. What happened to me? My doctor says I may have had an episode of Atrial Fibrillation. How much trouble am I in?"
    It sounds like you may have had an Atrial Fibrillation (A-Fib) attack. A-Fib is probably the most frightening of heart problems. We take our heart for granted until it starts beating wildly out of control. Unlike other heart problems which often build up over time, A-Fib can come on like a ton of bricks, seemingly out of nowhere.
    What happens in A-Fib is the upper parts of your heart (the atria) start beating on their own out of sync with the rest of your heart. It feels like you have mice in your heart or that your heart is flip-flopping around. Your doctor can monitor you to determine if you do have A-Fib.
    A-Fib is a real shock not only to the body but to our minds. Most people who’ve had A-Fib have all-too-vivid memories of their first attack. But as bad as A-Fib feels, it is probably the least immediately threatening heart problem. All things considered, you’re not likely to die from an A-Fib attack. The biggest danger of A-Fib is the increased risk of stroke, because your heart isn’t pumping out properly. But that risk of stroke can be lowered by medications or by the Watchman device.
    A-Fib over time can lead to more serious heart problems (the heart is stretched and weakened). Also, A-Fib may lead to mental deterioration, because the heart isn't pumping properly to the brain (see A-FIB DECREASES MENTAL ABILITIES.)
    As troubling as A-Fib is, many people have learned to live with it all their lives. If that isn’t an option you want to consider, antiarrhythmic medications have helped some people control their A-Fib. Another option is a low risk procedure with a high rate of success called Pulmonary Vein Ablation (Isolation). Another option is surgery to stop the A-Fib.
    The bottom line for you is A-Fib can be cured and/or controlled. There is light at the end of the A-Fib tunnel. (The author was cured by a Pulmonary Vein Ablation procedure in 1998.) 

    2. "Did I cause my Atrial Fibrillation? Am I responsible for getting A-Fib?"
    Most likely not. We all remember our first attack of A-Fib---the shock, fear, confusion, the sense of something wrong in our body that we can't control, the rushing to a doctor and/or emergency room. Often there's a tendency to blame ourselves, to feel guilt. We ask ourselves "What did I do or not do that caused my A-Fib?"
    But in general we are not responsible for and didn't cause our A-Fib. Whether we call A-Fib a defect of the heart or body or electrical system or nervous system or an abnormality or predisposition or weakness or tendency or whatever, A-Fib is usually not something we cause or bring on ourselves. It's different than a condition like high blood pressure.
    Especially people with new A-Fib need to think of A-Fib as an act of God or fate or karma or a life accident rather than as something we bring on ourselves. In life sometimes bad things happen to good people through no fault of their own. Think of A-Fib that way. We need to keep saying to ourselves, "I am not responsible for my A-Fib. I did not cause my A-Fib," like a chant or mantra whenever we start feeling guilt or blame for our A-Fib.

    3. "What caused my A-Fib?"
    That's really hard to say even knowing your life history. Read the section on Causes  and see if you think anything applies to you. Many A-Fib cases seem to have no apparent cause or trigger that can be identified with today's medical knowledge.

    4. "Is Atrial Fibrillation a prelude to a heart attack?"
    In general, no. A heart attack is a physical problem with your heart muscles or heart functions. For example, a blocked artery may result in what is called a "myocardial infarction" in which part of the heart tissue actually dies due to a lack of blood. Whereas A-Fib is primarily an electrical or rhythm problem, though it may be related to other heart problems like hypertension and Mitral Valve disease. See Overview.
    However, A-Fib untreated over a long period of time could eventually stretch and weaken your heart, and possibly lead to heart malfunction and a heart attack.

    5. "Can I die from my Atrial Fibrillation?"
    Most episodes of A-Fib are not life threatening. Even though you may feel awful, it's not like having a heart attack.
    The biggest danger from A-Fib is the risk of stroke. Because your heart isn't pumping out properly, blood clots can form and travel to the brain causing stroke. If you have A-Fib, you are five times more likely to have a stroke than the general population. It's most important to take a blood thinner like warfarin (Coumadin) or aspirin to help prevent these clots from forming.
    If you've had A-Fib for a long time, your heart muscles may eventually weaken. You may become more prone to other heart problems. People with A-Fib have nearly double the risk of death compared to someone in normal heart rhythm. ⁶¹See Overview. Also, A-Fib may lead to mental deterioration (see A-FIB DECREASES MENTAL ABILITIES.)

    6. "My doctor says I have Atrial Fibrillation. Could it be something else? Should I get a second opinion?"
    A-Fib is fairly easy to diagnose using EKG's, Holter monitors, etc. If you have A-Fib symptoms and your Cardiologist says you have A-Fib, you probably have A-Fib. Where you may want a second opinion is how to be cured of your A-Fib. See Overview and Cures.
 
    7. "Will my A-Fib go away on its own?"
    On occasion this does happen. In a process called "spontaneous remission" the body adjusts to whatever caused the A-Fib and starts beating normally without any treatment at all. But don't count on this happening. You still need to be under a Doctor's monitoring and care.

 The following questions deal with coping with A-Fib.  

    8. "What can I do for my husband (wife) when he (she) has an Atrial Fibrillation episode?"
    If your husband/wife is in great discomfort and his/her heart is beating very rapidly and irregularly, you can call 911 or get him/her to an Emergency Room where the staff can use a defibrillator and medications to electrically shock him/her back into normal sinus rhythm, or convert him/her back to sinus rhythm using drugs. But, unlike a heart attack, most episodes of A-Fib are usually not life threatening. See Overview.

    9. "My husband's A-Fib is getting worse. When should I call Emergency and/or take him to the hospital? I'm petrified with fear for him. Our doctors say don't worry unless he shows signs of a heart attack or stroke."
    This is a hard question to answer, because hospitals are limited in what they can do for your husband on an emergency basis. The two main options a hospital has on an emergency basis are:
    1) Electrocardioversion, which is basically shocking the heart to return it to normal sinus rhythm. This doesn't always work, and often the A-Fib returns. Even though your husband will be given anesthesia, the shock may be somewhat traumatic. The electrode paddles may leave burn marks on his chest. If your husband has frequent A-Fib attacks, the hospital can't do Electrocardioversions each time.
    2) Drug cardioversion. Your husband will be given an antiarrhythmic drug, often intravenously, to return him to normal sinus rhythm. The hospital may have to monitor your husband for three or four days to watch for bad side effects from the antiarrhythmic drug. This drug therapy also doesn't always work, and can't be done every time he has a frequent A-Fib attack.
    For your own peace of mind you need to work out with your doctors a plan, what to do when your husband has an A-Fib attack. It may be to do nothing, unless there are signs of a stroke or heart attack. But you need a plan, specific steps that you both should take. If you aren't satisfied with what your doctor is saying or if you feel he/she isn't addressing your anxieties, get a second opinion.
    Do you think your husband (and you) can learn to live with his A-Fib attacks? Many people live all their lives with A-Fib.
    You both need to realize that people usually don't die from an A-Fib attack, especially if they are on blood thinners like warfarin. As bad as it feels, an A-Fib attack usually isn't life threatening. When an A-Fib attack hits your husband, you can help by getting him to sit down and relax as much as possible. Maybe he needs to be reassured that this isn't life threatening. If you both know from experience that this A-Fib attack will pass, that helps to keep you both calm and get you through it. (I know how hard it is to "relax" when your heart feels like its going to jump out of your chest and is totally out of control.)

    10. "Can I exercise if I have Atrial Fibrillation? Should I exercise? Should I cool my sex life?"
    It's really a judgment call for you and your doctor whether or not you should exercise. In A-Fib when you first start exercising, your heart rate tends to be very rapid. Also, the A-Fib reduces your overall capacity to exercise, because your heart isn't pumping properly.²⁵
    These observations aside, if you can exercise without your heart rate becoming too rapid and you feel like exercising, you probably should. (In some types of A-Fib, moderate exercise may actually help you come out of an attack of A-Fib.)
    If you want to monitor your heart rate while you exercise, you can wear a heart rate monitor (such as the Polar Heart Rate Monitor available in sporting goods stores. Nike and Garmin also make heart rate monitors). It straps around your chest and transmits your heart rate to a watch you wear. You can set it to sound an alarm if your pulse exceeds a certain rate.
    You don't have to worry about dying while making love. Episodes of A-Fib are normally not life threatening.
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    11. "I have a lot of stress at work. Does this stress cause or trigger my A-Fib?"
    There's always going to be some stress in life. Nobody lives a stress-free life. It's part of the human condition.
    Remember that A-Fib, unlike other heart problems, is primarily a physical problem, a defect in your heart. If you have something like high blood pressure, stress may harm you. But it isn't all that big a factor in A-Fib. You could be lounging on a swing on a tropical isle and still have A-Fib attacks.
    However, there are life events like the sudden death of a family member or friend, which can't help but affect us in every part of our body and mind. These life-changing crises can certainly produce stress which might cause or trigger A-Fib.

    12. "Can I drive my car if I have Atrial Fibrillation?"
    In general, yes. With most types of A-Fib you can drive safely. But if your episodes of A-Fib cause dizziness, you need to determine if you can safely drive. If your A-Fib episodes cause you to become dizzy, as soon as you feel the beginning of an episode of A-Fib, pull off to the side of the road and stop. Wait there until the episode passes. If this happens often or if your episodes of A-Fib last a long time, you may have to stop driving entirely.
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    13. "How can I tell when I'm in A-Fib or just having something like indigestion?"
    Without medical help you may not be able to tell if you have A-Fib or something like indigestion. Many people have "silent A-Fib" which is A-Fib with few or no symptoms. "Silent A-Fib" can be very dangerous. It can lead to stroke, circulation problems, heart problems, mental deterioration.  Some doctors advocate mandatory A-Fib screening for anyone over 60. (See "Silent A-Fib"). (It's been reported that indigestion is sometimes a side effect of an A-Fib attack.)
    To verify if you have A-Fib, a doctor can give you an ECG test or can have you wear during the day a monitoring system such as a Holter monitor. Only a doctor can determine if you have A-Fib.
    If you want to monitor yourself (which may not necessarily be a good idea), you can take your own pulse or use an over-the-counter heart monitoring device such as the Polar Heart Rate Monitor used by runners. It's worn around your chest and transmits a signal to a wristwatch that beeps when your pulse goes too high. You can check the digital display on the watch to see how fast your pulse is. (When I had A-Fib, I used the Polar monitor whenever I tried to jog. In fact I eventually wore it all the time, which was probably a bit obsessive. But it did alert me to "silent" A-Fib attacks I normally wouldn't have been aware of.)
    Warning: any over-the-counter device is no substitute for monitoring and treatment by a doctor. You should not use over-the-counter devices to diagnose yourself.

    14. "Is there anything I can do to get out of an A-Fib episode? Is there any way to predict when I'm going to have an A-Fib attack?"
    The "pill-in-the-pocket" approach is reported to be often effective in stopping an A-Fib episode. Under a doctor's direction, you take the antiarrhythmic meds flecainide (brand name Tambocor) or propafenone (Rythmol) whenever you feel the start of an attack of A-Fib. The dosage is determined by your doctor.
    (Most of the following is anecdotal, what people have reported, rather than based on scientific studies. Please use discretion in trying any of the following.)
    - Magnesium and/or Potassium supplements have been reported to help A-Fib attacks. Some people soak in Epsom salts for twenty minutes to get out of an A-Fib episode.  See Epson Salts Cure. [Ian in Australia recommends a Martin and Pleasance product called "Magnesium Phosphate Spray" (available only in Australia/New Zealand) and Magnesium Orotate.]
    - Mild exercise has been reported to be helpful in getting out of an A-Fib episode, but in other cases exercise may trigger A-Fib.
    - Resting and lying down in a darkened room during an A-Fib episode.
One person suggests, "...lying down on my bed without a pillow, relaxing my body and mind, and keeping my body very warm."    
    - The application of cold compresses or ice packs to the back of the neck.
    - Putting one's head between one's knees and/or breathing down hard on one's diaphragm.
    - Taking a hot bath or shower (which seems to contradict the use of cold packs above).
    (If you have any remedies which have worked for you to bring you out of an A-Fib attack, please let me know at Feedback. I'll include them here.)
    Predicting an A-Fib episode. You may want to try keeping a log or diary of your A-Fib episodes for three or six months. By checking this log you may find, for example, that your A-Fib episodes come mostly at night or after a meal, which may mean you have Vagal A-Fib. What is the interval between your A-Fib episodes? Some people have very regular intervals between A-Fib attacks.
    But in general A-Fib seems to have a mind and schedule of its own that's often hard to predict. (When this author had A-Fib, he had very short episodes no longer than five minutes, but often during the day. He was never able to predict when they would occur, or identify what may have triggered them.)

    15. "I have A-Fib. In case of an emergency, should I carry a wallet card or a medical bracelet? What information should I put on it?" (Thanks to Darrel Seife for this question.)
    According to a Paramedic with 25 years experience, knowing about your A-Fib and Coumadin use is "nice-to-know" rather than life-saving, necessary info. Emergency responders don't normally carry meds to treat A-Fib. In case of an accident when one is bleeding, techniques to stop the bleeding such as compresses, tourniquets, etc. will be used whether or not one is taking Coumadin.
    Whether or not one has A-Fib, it's generally a good idea to have medical ID in case of an emergency. A medical bracelet or dog tags are more often noticed by emergency personnel than wallet cards. To obtain a free wallet medical ID card, you can go to the following site: http://www.medids.com/free-id.php. (The author is not recommending the products on this site, but only listing it as a convenience for visitors to A-Fib.com.)

    16. "Is drinking coffee (tea, colas, other products with caffeine) going to make my A-Fib worse or trigger an A-Fib attack?"
    The author used to include coffee as a trigger of A-Fib, but recent research suggests that coffee and caffeine in moderate to heavy doses (2-3 cups to 10 cups/day) may not trigger or induce A-Fib.^{144, 145} Coffee (caffeine) may indeed be antiarrhythmic and may reduce the propensity and inducibility of A-Fib both in normal hearts and in those with focal forms of A-Fib.¹⁴³ (Thanks to contributor Karl for calling our attention to these articles.)
    The researchers who discovered the antiarrhythmic effects of coffee (caffeine) were somewhat surprised at their findings. They had expected to find the opposite results. Caffeine is a stimulant. It makes its consumers awake and alert, and it improves performance.¹⁴⁷
    Coffee (caffeine) is commonly associated with disruption of cardiac rhythm. But does research confirm this belief? "Most cardiac patients tolerate normal amounts of caffeine without difficulty."¹⁴⁸ Frost and Vestergaard in a study of 50,000 middle-aged people followed for around six years (the Danish Diet, Cancer, and Health Study, 2005) found that caffeine does not increase the risk for developing A-Fib. The daily consumption of caffeine from coffee, tea, cola, cocoa, and chocolate was quite high, as is usual in Scandinavia where people drink 2-3 cups to 10 cups of coffee per day.¹⁴⁵
    But researchers are currently unable to identify the mechanism(s) behind coffee's potential antiarrhythmic effect. Researchers hypothesized that caffeine may protect from A-Fib by inhibiting adenosine A1 and A2 receptors. "Selective blockade of the adenosine A1 receptor was shown to result in a decrease in AF propensity."¹⁴³
    The important research question is, how does coffee (caffeine) affect you personally? If you drink a cup of coffee and then have an A-Fib attack, you may have to stop drinking coffee. But for others, a blanket prohibition against drinking coffee probably isn't justified by current research. In fact, coffee (caffeine) may have antiarrhythmic effects. 
    Contributor Allan, cured of Persistent A-Fib after two ablations at Bordeaux, writes, "I tried many different things both mainstream and alternative to get relief from A-Fib. I also observed and noted triggers with a great deal of intensity, so I feel compelled to comment on the latest post regarding the positive effects of Coffee/Caffeine. I never had anything other than bad effects from coffee on my A-Fib. Coffee/caffeine was a significant trigger for me...even in very small doses. So I guess my story underscores the complexity of triggers/suppressants across the general population.
    I do hope people reading that report don’t go out and dose up on coffee. We all know that coffee will make our hearts go faster, which is probably not good." 

    17. "Is smoking medically prescribed marijuana or using Marinol going to trigger or cause A-Fib? (Marinol is a pill prescription form of marijuana, also known by the generic name dronabinol.)
    There isn't much clinical research on this subject. However, the makers of Marinol advise that it “should be used with caution in patients with cardiac disorders (like A-Fib) because of occasional hypotension, possible hypertension, syncope, or tachycardia. Dronabinol-induced sympathomimetic activity may result in tachycardia.”
    In a search of the published medical literature, the makers of Marinol found no studies evaluating the use of Marinol in treating A-Fib. They have no plans to conduct any such studies.
    The bottom line is marijuana or Marinol is more likely to trigger A-Fib or tachycardia than not.  But we all react differently to meds.

    18. "Can excess iron in the blood (Iron Overload Deficiency) cause Atrial Fibrillation? How do I know if I have IOD? What can I do about it?"
    Not only does excess iron in the blood trigger or predispose you to A-Fib, it injures and eventually can kill a variety of body organs like the liver and gall bladder. "Undiagnosed, untreated iron overload, regardless of its origin can lead to diabetes, arthritis, depression, impotence, liver-gall bladder disease, complete liver failure, heart attack, cancer."⁴⁹ (chronic fatigue and Alzheimer’s). "...excess iron is toxic and can injure every part of the body, including the brain."⁵⁰ And IOD is a much more widespread condition than people are aware of. Genetic IOD (Hereditary Hemochromatosis) is the most common genetic disorder in the U.S.⁵⁰ One can also develop excess iron by absorbing too much from supplements, iron-rich diet, tobacco and other sources.
    When you have your annual physical exam, your doctor should check for iron overload. The most common tests are:
        1. Transferrin saturation (TS), also called "Percentage of Saturation." After fasting, blood is taken to measure Total Iron Binding Capacity (TIBC) and Serum Iron (SI). SI is divided by TIBC to get the Percentage of Saturation. A safe range is 12-44%. Over that is considered iron overload.
    2. Serum ferritin concentration (stored iron). A safe range is 5-150. (If the first TS test comes out OK, this test may not be done.)⁵¹
    3. Hemoglobin. Iron is used by the body for hemoglobin production. Hemoglobin is the iron-containing respiratory pigment in red blood cells. The top normal level is 14 for women, 15 for men.
    4. Hematocrit. The percentage by volume of packed red blood cells in a given sample of blood after centrifugation (i.e., the percentage of red blood cells in your blood). The top normal level is 42 for women, 45 for men.
    5. Another test given less frequently is the UIBC which measures Unbound Iron Binding Capacity. A safe range is above 146. If you’re below that, you should be treated for iron overload.
    If you have iron overload (IOD), you and your doctor must act aggressively to get rid of that excess iron as fast as possible. It won’t go away by itself. "Unfortunately, the body has no way to rid itself of excess iron."⁵² To get your iron levels down, you have to give blood through a "phlebotomy" program at your doctor’s office or blood bank as often as once or twice a week. Drugs known as chelators can also remove excess iron from the blood.
    To prevent iron overload (IOD), many of us, particularly men, would benefit from donating blood on a regular basis. Pre-menopausal women normally loose blood monthly thereby lowering their iron levels, but in men the iron just accumulates with age. "When you donate blood, the life you save may be your own." (Thanks to Isabelle Horowitz for much of this info on IOD.)

    19. "Can too little iron in the blood (Anemia) cause Atrial Fibrillation? What can I do about it?"
    (Thanks to Sally Mertens for this response. "Based on my experience dealing with chronic A Fib, I would stress the importance of having ferritin level checked.  Once a doctor (my GYN [Gynecologist] not my Cardiologist!) figured out that my chronic A-Fib might be related to my low ferritin level (9), after only 6 weeks of taking Repliva (82 mg/day iron), my ferritin was up to 29 and my A Fib had stopped. (Another over-the-counter iron supplement is Floradix.) I haven’t had one A Fib attack since I started the Repliva.
    I concurrently stopped donating blood (which I was doing as frequently as possible) and began eating beef - at least 8 ounces per week - (after 3 years as a vegetarian).
    My GYN would like to see my ferritin level at about 50 and told me it would take about 6 months for me to get my blood “stores” back to normal. I feel extremely lucky and grateful that when I moved to a new town, I got referred to a GYN who was well aware of the link between anemia in pregnancy and heart conditions. (As a footnote, every time I donated blood, I passed the Red Cross hemoglobin test. My GYN understood how that was possible, but I didn’t understand the explanation well enough to share it with you here.) 
    I’m well past child-bearing age and thus, as a precaution, my GYN also sent me for a colonoscopy to rule out internal bleeding as a factor in my low ferritin.

General A-Fib Questions

    20. "Why does so much Atrial Fibrillation come from the Pulmonary Vein openings?"
    Perhaps because the embryonic origin of the Pulmonary Vein openings (Ostia) is the same as that of the Sinus and AV Nodes. They are similar in structure and have similar smooth muscle tissue. The Pulmonary Vein openings are electrically active in the heart like the Sinus and AV Nodes but usually beat in sync with them. Disease, viral infections, stretching, fibrosis, or other factors may cause the Pulmonary Vein openings to start beating out of sync with the Sinus and AV Nodes thereby producing A-Fib signals. (Please be advised that the above statement is an observation, an attempt to explain, rather than a medical fact. Further research is necessary to confirm this observation.)

    21. "Is my Atrial Fibrillation genetic? Will my children get A-Fib too?"
    Some research has identified a Familial A-Fib where A-Fib is passed on genetically,²⁸ but it is relatively rare. Even though the gene responsible for inherited A-Fib has been identified,⁴⁶ there hasn't been enough research on the genetics of A-Fib to say whether or not your children will inherit your A-Fib. However, there are many causes or triggers of A-Fib that are not genetic. Your A-Fib may not be genetic, in which case you won't pass it on to your children. (See Causes.) (Also see the studies of Dr. Ellinor.)
            Top of Page

    22. "Why do older people get Atrial Fibrillation more than younger people?"
    This may be related to what is called "Interstitial Fibrosis" which is often part of the aging process. The Pulmonary Vein openings (where most A-Fib signals originate) sometimes become fibrous as we age. The Pulmonary Vein openings are similar in structure and have similar smooth muscle tissue as the Sinus and AV Nodes which generate your normal heart beat signal. The Pulmonary Vein openings are electrically active in the heart like the Sinus and AV Nodes but usually beat in sync with them. When the Pulmonary Vein openings become fibrous, they tend to beat out of sync with the Sinus and AV Nodes which results in A-Fib. (Please be advised that the above statement is an observation, an attempt to explain, rather than a medical fact. Further research is necessary to confirm this observation.)

    23. "Is Atrial Fibrillation (A-Fib) different from what doctors call Paroxysmal Supraventricular Tachycardia?" (Thanks to Sol Yuyitung for this question.)
    "Supraventricular" refers to the upper part of the heart, the atria. "Tachycardia" means the upper part of your heart is beating faster than normal. "Paroxysmal" means occasional.
    "Supraventricular Tachycardia" in clinical practice commonly refers to atrial tachycardia, atrioventricular nodal reentrant tachycardia (AVNRT), and atrioventricular reciprocating tachycardia (AVRT), an entity that includes Wolff-Parkinson-White syndrome. While Atrial Fibrillation is a distinct entity classified separately.
    The term "Supraventricular Arrhythmia" most often is used to refer to Supraventricular Tachycardias and Atrial Flutter.
    In practice, "Supraventricular Tachycardia" is often used loosely to include all arrhythmias in the Atria, including A-Fib.

    24. "What is the difference between "Adrenergic" and "Vagal" Atrial Fibrillation. How can I tell which one I have? Does it really matter? Does Pulmonary Vein Ablation (Isolation) work for Adrenergic and/or Vagal A-Fib?"
    To the list of the causes or triggers of A-Fib such as heart disease, thyroid problems, fibrosis, etc. (See Causes), we should also add the malfunctioning of the Sympathetic and the Parasympathetic Nervous Systems.
    The Sympathetic Nervous System reacts to stress, stimulants, etc. causing the heart to speed up and the blood vessels to constrict. A-Fib arising from an overactive Sympathetic Nervous System is called Adrenergic A-Fib (adrenaline stimulates the heart to beat faster and stronger when the body demands more oxygen).
    The Vagus Nerve, in contrast, controls the abdomen and is part of the Parasympathetic Nervous System which slows the heart and dilates the blood vessels. A-Fib arising from an overactive Parasympathetic Nervous System is called Vagal (Vagotonic) A-Fib.
    Adrenergic and Vagotonic forms of paroxysmal A-Fib are uncommon.⁴³ "The majority of patients with paroxysmal A-Fib do not have a clear autonomic pattern."¹¹⁰ However, if your A-Fib occurs usually during the day and is normally triggered by exercise, stress, stimulants, exertion, etc., then you may have "Adrenergically-Mediated" A-Fib. People with structural heart disease seem more prone to Adrenergic A-Fib⁴⁴. But if your A-Fib occurs at night, after a meal, when resting after exercising, or when you have digestive problems, then you may have "Vagally-Mediated" A-Fib. People with Lone A-Fib seem more prone to Vagal A-Fib⁴⁴. (Many people have a mix of both Adrenergic and Vagal A-Fib.) (Perhaps A-Fib begins as a nervous system problem, then becomes a heart problem after the arrhythmia is established.)
    It might be helpful to determine if you have one or the other so that you can better identify what triggers your A-Fib, and because the treatments are often different for each. For example, beta-blockers usually don't work well with Vagal A-Fib.⁸⁶ (One person with Vagal A-Fib E-mailed that his A-Fib was caused or triggered by a beta-blocker.)
     Of the antiarrhythmic 1c meds, flecainide seems to work better for Vagal A-Fib than propafenone.¹¹¹ (Though it's difficult to generalize about A-Fib treatments, because each person reacts so individually.) For a more in depth look at Vagal A-Fib, go to Vagal A-Fib.
    Current research hasn't indicated yet whether Pulmonary Vein Ablation is more or less effective or appropriate for Adrenergic than for Vagal A-Fib. However, it seems that both Adrenergic and Vagal A-Fib are focal in origin (come from specific points or spots in the heart), and can presumably be cured by current Pulmonary Vein Ablation (Isolation) procedures. 

    25. "I had a single episode of A-Fib 17 months ago and was successfully converted with medication (Cardizem drip). That day I had only four hours of sleep, had eaten no breakfast, but did have an extra large coffee. I also had watery diarrhea and was somewhat dehydrated. Is it possible that my electrolytes were out of whack and led to the A-Fib episode? Other than an occasional PAC of PVC, I haven't felt any A-Fib symptoms since. I'm wondering if it's possible to have a single A-Fib attack and not have any others." (Thanks to Joan for this question.)
    Once an area or areas in your heart start producing A-Fib pulses, it's usually hard to turn them off again. But whatever you did seems to have worked for you.
    Have your doctor keep track of your blood chemistry to make sure you don't get into chemical imbalances that might trigger A-Fib again. (When you went to the hospital for that single episode of A-Fib, what kind of imbalances did they find?) You may want to look into taking supplements or foods that help keep your heart chemistry in balance. (See Natural Remedies.)
    PACs and PVCs are considered benign---people with normal hearts have them. But in A-Fib they often seem to be precursors of an A-Fib attack.
    For your own peace of mind, ask your doctor for a Holter or other type of monitor which you would wear for one or three days. This would tell if you have any "silent" A-Fib which you may not be aware of, but which can be dangerous.

    26. "I've had A-fib for several years and have read that it may produce fibrosis and collagen deposits in the atrium (See: A-Fib Induces Fibrosis). How can I determine or measure how much fibrosis I have? Can something non-invasive like a CT scan measure fibrosis?" (Thanks to Stewart Stafford for this question.)
    To the best of my current knowledge, a CT scan does not measure Fibrosis. EPs currently can measure fibrosis by going inside the heart and mapping fibrosis with a voltage monitoring catheter.
    Recent research indicates that Fibrosis can be measured by an MRI.^{169, 170}

 The following questions deal with Treating or Curing A-Fib.  

    27. "Is Atrial Fibrillation curable? Or can you only treat or control it?"
    A-Fib is definitely curable. If you have A-Fib, no matter how long you've had it, your goal should be a complete and permanent cure. If your doctor is satisfied with keeping your A-Fib "under control," get a second opinion.
    But, if you are eighty or older, have a severely enlarged atrium (over 55 cm), or have other conditions which might make an A-Fib ablation more risky for you, you need to weigh the risks and probability of success with your doctor.

    28. "Which is the best A-Fib treatment option for me?"
    This is a decision only you and your doctor can make. But, depending on the type of A-Fib you have, here are some guidelines which may help you. Listed below are A-Fib conditions as described by people with A-Fib. Click on the kind of A-Fib you have in order to read your possible options.
    (Not mentioned in these options is the use of "natural remedies" and supplements like Magnesium and Potassium. Read the section on Natural Remedies to see if any of these supplements may help your A-Fib.)

1. "My A-Fib just started."
    
2. "My A-Fib is occasional (Paroxysmal) with no  symptoms (sometimes referred to as "silent' A-Fib)."
    
3. "I have infrequent, short episodes of symptomatic A-Fib."
    
4. "I have Paroxysmal (occasional) A-Fib but am in good health overall."
    
5. "I have Paroxysmal (occasional) A-Fib but also have serious heart and/or other health problems."
    
6. "My A-Fib is Persistent or Chronic (all-the-time)."
    
7. "I have A-Fib but am allergic to Coumadin, Heparin, Lovenox and most blood thinners. And I'm very overweight."
    
8. "I've had two failed left atrium ablations and have tried many different medications."
    

http://www.strokecenter.org/education/albers/af1_p6.htm

Notes:
The left atrial appendage of a woman with atrial fibrillation who suffered a thromboembolic event is shown. Organized 5mm thrombi are apparent. A 5mm thrombus can completely occlude the middle cerebral artery.

Copyright (1988) American Heart Association.
http://www.strokecenter.org/education/albers/af1_p7.htm

    46. "I just had an Electrical Cardioversion. My doctor wants me to stay on Coumadin for at least one month. Why is that required?
    They mentioned something about a "stunned atrium." What is that?" (Thanks to David Mobley for this question.)
    A "stunned atrium" is medically defined as a "state of temporary mechanical atrial dysfunction with preserved bioelectrical function"¹⁷⁸---in non-medical terms your heart doesn't contract properly even though is it getting the right electrical and chemical signals to contract. This can happen after an Electrical Cardioversion and is why the left atrium and, in particular, the Left Atrial Appendage tend to develop clots after an Electrical Cardioversion.
    The Left Atrium, and especially the Left Atrial Appendage, is "stunned" after the electrical shock and may not contract and pump out properly. Clots can develop and be released when the LAA starts to contract again.¹⁷⁹ That's why you need to be on a blood thinner like Coumadin for a month after your Electrical Cardioversion. 

    47. "I know I'm at risk of an A-Fib stroke, but I hate taking Coumadin. Aren't there any natural remedies or supplements I could take?"
    There are "natural" remedies that thin the blood. But there isn't much research on their effectiveness in preventing an A-Fib stroke.
    Realize also that your doctor isn't likely to tell you to stop taking prescription blood thinners like Coumadin (warfarin) and Plavix. That would be legal suicide. Even people on Coumadin with the proper INR levels get strokes. Coumadin reduces the annual risk of A-Fib stroke by two-thirds,⁴⁵ but it doesn't eliminate it entirely. However, if your doctor took you off of Coumadin and you had a stroke, he/she could be sued.
    The same is true for this web site which is not recommending or suggesting you quit taking prescription blood thinners.
    Here are two "natural" remedies that are thought to thin the blood. Again, how effective these "natural" blood thinning regimens are to prevent A-Fib stroke has not been scientifically established.

1. Gingko 120 mg once or twice daily
2. Essential Daily Defense (Garry Gordon's Product) 3-4 3 times daily (Contains Niacin, Vitamin B-6, Garlic Powder, Calcium Disodium EDTA, MSM, Malic Acid, Betaine HCL, Papain, Silica, Red Yeast, di-Methionine, Beta Sistosterol, Crataegus 6x (Hawthorne Berry), Carrageenan (Red Yeast)
3. Nattokinase or Lumbrokinase 2-6/day depending on circumstances
4. Unique E 1200 IU daily
5. Omega 3/6 2 twice/day

    Another similar regimen is the following:

    Nattokinase 1 2-3 times a day
    Fish Oil 2 capsules twice daily
    Gingko capsules 2-4 times a day
    Garlic (Kyolic) capsules 2-4 times a day
    Delta Tocotrienols 100 mg daily

    The following questions deal with Pulmonary Vein Ablation (Isolation) procedures.

    48. "I'm getting by with my Atrial Fibrillation. With the recent improvements in Pulmonary Vein ablation techniques, should I wait till a better technique is developed?"
    A-Fib is a progressive condition. The longer you have it, in general the worse it gets. In a process called "remodeling" your heart may change physically and electrically if you have A-Fib long enough. It's important to be cured as soon as possible. See Overview.
    With today's current Pulmonary Vein Ablation (Isolation) procedures using Pulmonary Vein Potentials, you have an 75-85% chance of being cured permanently (in cases of Paroxysmal A-Fib).^17,41 (The other 15% often are significantly improved, if not permanently cured.) Your odds aren't going to get much better than that.

    49. "Are there different types of "Pulmonary Vein Ablation"? Are they different than "Pulmonary Vein Isolation?"
    Pulmonary Vein Ablation of A-Fib is a relatively new procedure whose techniques and language are evolving. What follows is perhaps an oversimplified, somewhat biased attempt at explaining the catheter ablation procedures in use today from a patient’s perspective. (Pulmonary Vein Ablation differs from other types of Catheter Ablation used in treating A-Fib, such as Ablation of the AV Node.)
   FOCAL CATHETER ABLATION or FOCAL POINT CATHETER ABLATION
    In this early procedure doctors mapped the sources of ectopic beats (beats that come from any region of the heart that ordinarily should not produce heart beat signals), then used a Radiofrequency (RF) catheter to “ablate” or burn off areas or points within the heart producing these ectopic beats. But if you weren’t in A-Fib at the time, it was difficult to identify the Focal Points or areas of the heart producing ectopic beats.
   SEGMENTAL ABLATION
    Doctors discovered that when a patient was not in A-Fib, the Focal Points producing A-Fib signals could still be found by identifying and mapping electrical potentials coming from these points. A potential is an electrical charge or energy---like the battery energy in your car. Even if your car isn’t running, you can still measure 12 volts “potential” at the battery. Similarly, in your heart any potential can be measured and pinpointed, even if you aren’t in A-Fib. When the area is ablated, the potential disappears. Like taking the battery out of your car, removing this potential eliminates your A-Fib. (Doctors today do not usually ablate within the Pulmonary Veins because of the risk of causing Stenosis (swelling). Instead they determine where the A-Fib signal(s) exits the Pulmonary Vein opening and ablate there to "Isolate" the A-Fib signal.)
    CIRCUMFERENTIAL ABLATION  (also called EMPIRICAL ABLATION) (In 2007 this is generally referred to as CIRCUMFERENTIAL PULMONARY VEIN ABLATION [CPVA]. The term "Empirical Ablation" is not currently in use.)
    A circular catheter is used to make Circular Radiofrequency Ablation lines around each of the four Pulmonary Vein openings (ostia) in the left atrium of the heart. This procedure isolates the Pulmonary Veins from the rest of the heart and prevents any A-Fib signals from these veins from getting into the rest of the heart.
   ANATOMICALLY BASED CIRCUMFERENTIAL PV ABLATION (In 2007 this is generally referred to as WIDE AREA CIRCUMFERENTIAL ABLATION [WACA])
    In this ablation procedure an RF catheter is used to make not always continuous ablation lines that encircle the Pulmonary Veins, thereby isolating them from the rest of the heart. This procedure originated in Italy. It has a good success rate with very few side effects both for Paroxysmal and for Chronic A-Fib.⁴⁰
    LEFT ATRIAL CATHETER ABLATION (In 2007 this term has generally fallen out of use.) Similar to Anatomically Based Circumferential PV Ablation. In both procedures instead of trying to make continuous, perfect linear lesions which can be difficult and time consuming, doctors use a "drop and drag" technique which leaves gaps that are usually closed over time with scar tissue. 
    PULMONARY VEIN ANTRUM ISOLATION [PVAI]
    Instead on encircling each of the four Pulmonary Vein openings, one large encircling set of lesions isolates both the upper and lower left vein openings, another the upper and lower right vein openings. The encircling lesions are very wide and are in the Antrum rather than near the vein openings.
     SEGMENTAL ABLATION, CIRCUMFERENTIAL ABLATION, ANATOMICALLY BASED CIRCUMFERENTIAL PV ABLATION, LEFT ATRIAL CATHETER ABLATION. and PULMONARY VEIN ANTRUM ISOLATION are now generally referred to as types of PULMONARY VEIN ABLATION (PVA) or PULMONARY VEIN ISOLATION (PVI)). They are all similar in their approach. Their primary emphasis is the ablation/isolation of the Pulmonary Vein openings.
    Newer types of ablation have somewhat different ablation targets:
COMPLEX FRACTIONATED ATRIAL ELECTROGRAMS [CFAE]
AUTONOMIC GANGLIONATED PLEXI [AGP]
     The French Bordeaux group uses the term "electrical disconnection" rather than "Isolation" which very aptly describes what Segmental Ablation does. 
    Another term that needs re-defining is “Pulmonary Vein Potentials,” because not all Potentials come from the Pulmonary Vein openings. "Pulmonary Vein Isolation" isn't accurate for the same reason.
          
    Which of the above procedures is the best? They all have similar success rates. Though the jury is still out on this, in this author's opinion patients do better with Segmental Ablation. Circumferential Ablation is quicker and faster for doctors and requires less mapping, but it’s difficult to make good circular ablations. The Pulmonary Vein openings aren’t always smooth, easily ablatable surfaces. Any gap in the circular ablation may result in more A-Fib. And not all A-Fib comes from the Pulmonary Veins. From a patient's perspective, you're better off with a doctor who will carefully map your heart to find out where exactly your A-Fib signals are coming from, and who will check for both Entrance and Exit Block (Isolation).
    Also, with Circumferential Ablation there might be a greater danger of Stenosis, a swelling of the Pulmonary Vein openings after ablation. PV Stenosis restricts blood flow into the heart and can lead to fatigue, flu-like symptoms and pneumonia.  To quote Dr. Pierre Jaïs of the Bordeaux group in a debate at the NASPE convention in San Diego, “Why use a cannon to shoot an ant?”³¹ Segmental ablates only areas that have potentials, not the whole pulmonary vein opening(s).
    It is even more difficult to make continuous linear ablation lines around the Pulmonary Vein openings because the inside of the heart is not a continuously smooth surface.
    The LEFT ATRIAL CATHETER ABLATION procedure is faster, easier, requires less operator's skill, and is more cost effective for doctors. It will probably become the procedure of choice for most A-Fib medical centers. But from a patient's perspective it involves a lot of scarring of the heart by high wattage catheters. And 20% of patients have atrial flutter after the procedure because of all the gaps in the lesion lines, though most of this flutter eventually disappears as these gaps fill in with scar tissue.
    (As of January, 2010, many use the term "Catheter Ablation" of A-Fib to include all of the above different ablation techniques.)

    50. "I’ve heard of ablation catheters that use Cryo (freezing). Are they any good or better than the RF (Radio Frequency) catheters in use today for PVA(I) ablations?"

    According to a pioneer in the technique, Dr. Walter Kerwin of Cedars-Sinai-Los Angeles, Cryo ablation seems to have definite advantages over RF.¹⁰¹ (Dr. Kerwin performed the first catheter Cryo ablation in the Western United States in 2005.)

ADVANTAGES OF CRYO ABLATION:

- Cryo ablation allows a doctor to test an ablation before making it permanent. Heart tissue can be slightly frozen to test whether it is responsible for producing A-Fib signals. That tissue can then be re-warmed and restored to its normal electrical function. Heat-based therapies like RF don’t allow that---once the heart tissue is burned, it stays burned.

- With Cryo there is less risk of damaging other areas of the heart or esophagus. Often in catheter ablation doctors have to work close to critical structures such as the heart’s pacemaking system, the esophagus, or the coronary arteries. For example, an RF ablation in the wrong spot can block the normal electrical conduction in the heart and require the surgical insertion of a permanent pacemaker. With Cryo ablation (which freezes tissue instead of ablating it), the risk of damage to critical structures in minimized.

- Cryo minimizes the risk of perforation. Because Cryo preserves heart tissue integrity rather than burning it, there is minimal risk of perforation. For example, a Cryo catheter is less likely to perforate the atrial wall.

- With Cryo there is little or no discomfort or pain during the procedure. Like putting a cold pack on a pulled muscle, the freezing acts as a natural anesthetic.

- With Cryo there is less risk of Stenosis (swelling ). An RF ablation in the Pulmonary Vein openings can sometimes result in Stenosis (swelling or narrowing of the Pulmonary Vein opening) which restricts or blocks blood flow. Since Cryo does not burn and instead preserves heart tissue integrity, there is less risk of Stenosis.

- When cold temperatures are applied, Cryo catheters stick to the heart tissue they touch, much like a tongue on cold metal. Since the heart is beating and in constant motion during an ablation, this is a significant advantage over RF. The ability of the Cryo catheter to stick to the exact spot to be ablated, helps the doctor avoid any accidental slips of the catheter tip, thereby preventing damage to nearby critical structures.

- Cryo produces no crust formations. RF burns can cause a crust to form over the ablated area (called a "thrombus"). This crust can fall off and lodge in a blood vessel, perhaps causing a blood clot and stroke. (That’s one of the reasons blood thinners like heparin are used during RF ablations, to prevent these blood clots.) With Cryo ablation, this risk of thrombus is minimized.

DISADVANTAGES OF CRYO ABLATION:

- Currently Cryo ablations using standard Cryo catheters take somewhat longer to do than RF. But Cryo ablations using the new balloon catheter will reduce the procedure time. FDA clinical trials of the CryoCath balloon catheter are underway in twenty A-Fib medical centers in the US (the Arctic Front -TM balloon CryoAblation catheter made by CryoCath Technologies, Inc.).

ADDED JULY 7, 2008
    Ablating using the CryoCath balloon catheter seems to be faster and easier, as well as safer than RF. Here is a recent study reported in the A-FibNews section:
June 28, 2008 "Cryoablation (with the CryoCath Arctic Front cryoballoon): Safer than RF..." Dr. Burghard Schumacher of Germany described a study involving 346 patients with Paroxysmal (293) or Persistent (53) A-Fib. Following one Cryoballoon ablation, 74% of Paroxysmal patients were free of A-Fib and in permanent sinus rhythm. But this figure was much lower for those with persistent A-Fib---just 38%. There were no strokes, no pulmonary vein stenosis, no esophageal injury, and no coronary artery injury as sometimes occurs with RF ablation (RF ablations typically have a major complication rate of around 4%). The main complication reported was a temporary palsy of the phrenic nerve. According to Dr. Philippe Ritter, president of Cardiostim, "Cryoablation (with the Cryoballoon catheter) appears to have a lower complication rate than RF ablation and is easier to perform...but we need some more years to look at it and compare it with RF ablation." (See: http://www.theheart.org/article/877315.do)
    (Editor's Comments: A 74% cure rate for the CryoCath balloon catheter is similar to current cure rates for RF ablations for Paroxysmal A-Fib. The low 38% cure rate for Persistent A-Fib might be due to only having one ablation. Most RF ablation procedures for Persistent A-Fib now require two or more ablations. [See: 95% Success Rate in Curing Persistent A-Fib.] Also, in this study only the Pulmonary Vein openings were treated with the CryoCath balloon catheter. They did not attempt any other lines or lesions as is commonly done with current RF ablations for Persistent A-Fib. Persistent A-Fib is more complex and difficult to cure. As doctors get more experienced with Cryo, they may well be able to achieve similar success rates as RF for Persistent A-Fib.
    In the future we may see centers first use Cryoballoon catheters to isolate the Pulmonary Veins because it is safer, easier, and uses less fluoroscopic exposure; and secondly use RF or non-balloon Cryo catheters for linear lesions and to target other areas of the heart in more complex cases of Persistent A-Fib. Cryo will probably also be used to ablate near the esophagus to prevent Atrial-Esophageal Fistula [see Morady: Boston A-Fib Symposium 2008].
    Cryoballoon catheter ablation may also be the answer to the problem of re-do's. [See Dr. Marchlinski's presentation on Ablation re-do's.] All too often RF ablation patients have to return for a second ablation, because of re-growth and reconduction of the RF ablated areas, and because PV isolation with RF is difficult to achieve in a uniform fashion, even with experienced operators. Circumferential ablation with small-tipped catheters often results in gaps in the lesions lines and uneven scar formation. The Cryo balloon catheter ablation may solve the problem of  re-do's, because of its ability to easily and quickly produce uniform pulmonary vein isolation. [See: Dr. Kerwin's explanation of Cryo Ablation.])
    The Cryo balloon catheter may become a major improvement in the treatment of A-Fib. It has already been approved in Europe, with close to 100% success rate in isolating the PVs, and 75-80% success in keeping patients free of A-Fib without anti-arrhythmic drugs.

added December 31, 2009
    The FDA hasn't yet approved the Cryo Cath balloon catheter. We don't know when or if the FDA will approve it. It is currently not available in the US even in clinical trials which have terminated (it is available in Europe). it may be available in special circumstances of "compassionate use." But this "compassionate use" exception is often difficult to obtain.
    You can get an ablation using just a Cryo catheter, but it currently takes too long to do a good Pulmonary Vein Isolation ablation. And, probably because it takes so long, it  doesn't seem to work as well as an RF ablation.
    Doctors have been doing RF ablations for years. They work. The Cryo Balloon and RF catheter ablations are pretty much equally effective. The Cryo Balloon is safer, but not that much safer than RF which is a low risk procedure.
    If we had a choice between the Cryo Balloon and RF, we'd probably choose the Cryo Balloon. But right now we don't have that choice. An RF ablation remains a good option with a high success rate and low complication rate. (Thanks to Jean Kirkland for suggesting this update.)

    51. "How dangerous is a Pulmonary Vein Ablation procedure? What are my risks? What are my chances of dying from a PVA procedure?"
    Pulmonary Vein Catheter Ablation is considered a "low-risk procedure."³³ In practice, for most A-Fib patients, the actual risks are so small that it’s much safer getting a PVA than not getting one. A PVA is much safer than a life on antiarrhythmic drugs or in A-Fib (See Catheter Ablation vs. Drugs.)
    But what are the actual risks involved? 
    1. When the catheters are inserted, there is a "small risk"³³ of damaging the veins and/or arteries which could cause bleeding. This can be repaired surgically. It’s similar to, though obviously not the same as, the risk you take when you donate blood.
    Your groin will generally have two access site points, one on each side. After a Pulmonary Vein Ablation, some minor bruising is common at each site with minor soreness as if you had banged the area.  Bruising may occasionally be seen to extend down the leg. This is normal as is an occasional small quarter sized bump in the area.  (If larger swelling or more significant pain occurs at the area, please contact the electrophysiologist who did the procedure.)
 
    2. To get to the left atrium which is usually the source of most A-Fib signals, the doctor must pass the catheter through the transseptal wall between the left and right atria. This puncture technique and the catheter manipulation involved increase the chance of heart puncture and bleeding through the heart walls. If this happens, blood may fill the sac surrounding the heart (the pericardium) and may have to be drawn off with a needle and catheter. Very rarely, surgery may be required. The more experienced and skillful your doctor is, the less this catheter manipulation is a risk.
    (Note: The doctors don't just punch through the transseptal wall. The catheter is inserted through a membrane formed when your heart developed as a fetus. In early fetal development your two atria weren’t completely separate. As the transseptal wall formed, this opening between the two atria (the foramen ovale) closed up. The catheter is inserted through this former opening or membrane. After the ablation procedure, this membrane closes back up and heals over.)
        (In some adults like Tedy Bruschi, linebacker of the New England Patriots, this foramen ovale opening between the two atria doesn't grow closed. This allows small blood clots that otherwise would be absorbed in the lungs to pass from one atrium to the other, and then travel to the brain. It's estimated that nearly 20% of adults have a foramen ovale opening between the two atria that never closes up completely.)
   
   
    3. As in A-Fib, there is a risk of blood clotting and stroke, which is why most medical centers use a blood thinner like Heparin during the procedure to prevent clotting during the application of RF energy to heart tissue. Also, before an ablation procedure a patient is often checked to see if there is any pooling or clotting of blood in the atria. If any clots are found, medications can be used to dissolve them. According to figures from the French Bordeaux group, "the risk for thromboembolic (stroke) events is lower than 0.5%."³⁴

    4. When the pulmonary vein openings are ablated or isolated, there is a risk of damaging and narrowing these vein openings. If a significant amount of this swelling (Stenosis) occurs, the doctors may have to stretch the narrowed area or insert a stent to keep the veins open. This ability to correct Stenosis correspondingly lessens your risk.
    (Note: In the early days of Pulmonary Vein Ablations, Stenosis (defined as over 50% narrowing of the vein opening) was a major problem. But with more experience and the use of irrigated-tip low wattage catheters, it is less of a problem. Ask the doctor or medical center you are working with how often Stenosis occurs due to their ablation procedures and how severe it generally is. If they can't provide those figures, think about going somewhere else. You will find that most major medical centers now have fairly low risks of Stenosis.)

    5. A possible risk to consider is the amount of X-ray exposure during an ablation procedure. Most catheter ablation procedures use fluroscopy, a type of X-ray with a fluorescent screen, to see inside the heart and to position the catheter(s). Many medical centers have limits to how much fluroscopy you can be exposed to and will stop a procedure if you exceed it. (Written May, 2010. Many centers are now using non-fluroscopy type imaging  such as MRI which greatly reduces the amount of X-ray exposure.)
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    6. Then there is the unforeseen, the strange things that happen sometimes in operations---allergic reactions to medications, anesthesia problems (some centers put you under completely, others don't, "extremely small risk of infection, valve damage, or heart attack"³³ during the procedure. But the doctors and staff are prepared to deal with emergencies and complications and they monitor you very closely.
    There is very little risk of dying from a Pulmonary Vein Ablation (Isolation) procedure. "To the best of our knowledge, no deaths have been reported in the literature in more than 2000 PV isolation procedures."³⁴ Recently, however, there  have been 20+ deaths reported due to a very rare complication called "atrial-esophageal fistula" where a hole forms between the atrium and the esophagus. This may be due to using high wattage catheters in the back of the atrium near the esophagus.⁶³ If you develop unexplained fevers exceeding 100 degrees anytime within the first 3 weeks post-ablation, you need to contact the electrophysiologist who performed your procedure.  Low grade fevers of around 99 degrees are common in the first day or so post-ablation.
    Another rare complication is damage to the Phrenic nerve in the Pericardium around the heart due to heat from the ablation catheter. This may result in breathing difficulties.⁹⁵
    An even more rare complication is getting the loop/mapping catheter caught in the mitral valve. In some cases it may require open heart surgery to remove it. The more experienced and skillful your doctor is, the less likely this is to happen. (When talking with a potential ablation doctor, you may want to ask how often does the doctor's patients have to be taken for open heart surgery.)
    After an Pulmonary Vein Ablation you may have some minor chest pain for the next week or so. The pain will often worsen with a deep breath or when leaning forward.  This is pericardial chest pain from the ablation and is generally not of concern.  It should resolve within a week although it might increase for a day or so after the ablation.

    Since Pulmonary Vein Ablation is a relatively new procedure, we don't have much data yet on long term risks. One long term study of Pulmonary Vein Ablations (Isolations) has indicated that many of the bad remodeling effects of A-Fib such as enlargement of the left atria and the ability of the atria to contract can be reversed after a successful PVA(I).⁵⁸
    For a more detailed examination of this question, see Wilber.

    52. "I know I need a Pulmonary Vein Ablation (Isolation) procedure to stop my A-Fib. A-Fib destroys my life. I can't work or exercise, and live in fear of the next attack. Antiarrhythmic meds cause me bad side effects. But I'm worried about being exposed to radiation during the ablation. How dangerous is the fluoroscopy radiation during an ablation?" (Thanks to Stephanie Fagan for this question.)
    Exposure to radioactivity during an ablation used to be a legitimate concern.  (Doctors and nurses wore lead aprons during an ablation.) Back in 2003, a typical A-Fib ablation resulted in around 50 minutes of fluoroscopy time.¹⁷² One hour of fluoroscopy imaging is associated with a lifetime three-in-ten thousand chance (0.03%) of developing a fatal malignancy, and a risk of passing on a genetic defect of 20 per 1 million births.¹⁷⁵ These risks were considered relatively small compared to the risks of being in A-Fib, antiarrhythmic drug therapy, and surgery.¹⁷⁴
    Doctors follow directives which limit the amount of radiation you can be exposed to during an ablation. If you get close to exceeding these limits, they will stop the ablation (though this rarely happens).
    But many centers today use much less or no fluoroscopy at all. Instead many use 3D non-fluoroscopy (no radiation) imaging techniques such as Intracardiac Echocardiography (ICE), and Magnetic Resonant Imaging (MRI). You need to check with your A-Fib center as to how much radiation their typical A-Fib ablation patient is exposed to. The radiation dose for a typical A-Fib ablation is estimated to be 18.4 mSv.¹⁷⁵ However, the radiation amount at your A-Fib center will vary depending on what type of imaging equipment they use.
    Once you learn what amount of ablation radiation you might be exposed to at your A-Fib center, then you can compare it to the following to determine if you should be concerned:
    • Average Background Radiation/year                    2.4 mSv
    • Chest X-Ray Radiation                                        0.02-0.2 mSv
    • Heart CT Scan Radiation (100-600 Chest X-rays)    12 mSv
    • 25.5 min. fluoroscopy during an A-Fib Ablation      15.2 mSv¹⁷⁶

    But bear in mind that, even a one hour-long exposure to fluoroscopy, is a relatively small risk compared to the risks of being in A-Fib, antiarrhythmic meds, and/or surgery.
    (The author did a very unscientific survey of the A-Fib medical centers in his area. The average seemed to be 10-20 minutes of fluoroscopy time [for those who used fluoroscopy] for an A-Fib ablation, but more complicated cases could expose patients to 60(+) minutes of fluoroscopy time.)

Protecting Yourself From Radiation Damage
    You can take measures before and after your ablation to help protect yourself from radiation damage. Since much of the cancer-causing damage from ionizing radiation is from hydroxyl free radicals, it's recommended to take antioxidant supplements to neutralize them. A typical plan is to take the following natural supplements every six hours for at least 24 hours before and after your radiation exposure. These are available without a prescription from health food stores. But check with your doctor before taking any supplements.
    1. Vitamin C 1000 mg
    2. Lipoic Acid 400 mg
    3. N-Acetyl Cysteine 200 mg
    4. Melatonin 3 mg

Added 8/28/2010
    "Radioactivity in low doses is good for us."
    In 1983 180 apartment building were built in Taiwan. But somehow highly radioactive Cobalt-60 was mixed into the concrete. The 10,000 people who lived in these apartments for 9-20 years received an average of 74 millesieverts (mSv) of radiation a year (a typical catheter ablation using fluoroscopy produces around 15 mSv¹⁷⁶---non-x-ray imaging systems much less).
    But cancer rates of people living in these highly radioactive buildings were 3.6% of prevailing Taiwanese rates. This is a reduction in cancer rates of 96.4%. This phenomena is perhaps explained by the theory of hormesis which holds that intermediate levels of radioactivity actually stimulate life and improve health.
http://www.jpands.org/vol9no1/chen.pdf
http://www.ecolo.org/documents_in_english/taiwan-cobalt-60-apartment-04.htm
    (Author's Note: The nuclear theory that any level of radiation is cumulatively damaging may not be valid [the "Linear No Threshold [LNT}" theory.] The levels of radiation received during a typical catheter ablation may not be dangerous, but may even be healthful.)

    53. "I have serious heart problems and chronic heart disease along with Atrial Fibrillation. Would a Pulmonary Vein Ablation help me? Should I get one?"
    This is a judgment call only you and your doctor can make. A PVA(PVI) may help you. But your time and efforts might be better spent getting your other heart problems under control. As compared to other heart problems, episodes of A-Fib feel weird and uncomfortable but are normally not life threatening.

    54. "I have an enlarged heart due to years of A-Fib. I was told I can't have a Pulmonary Vein Ablation (Isolation) procedure. Why is that?"
    A-Fib is a progressive disease that, among other bad effects, tends to enlarge and stretch your left atrium. Because your left atrium is fibrillating or quivering rather than beating properly, it isn't filling and emptying properly. Your left atrium has to work harder than normal and tends to stretch and dilate over time.
    (An enlarged heart may also proceed or cause A-Fib. High blood pressure or other heart problems may enlarge your heart and lead to or trigger A-Fib.)
    A normal left atrium measures around 2.0-4.0 cm. Some centers won't do a Pulmonary Vein Ablation (Isolation) procedure if the left atrium is over 5.5 cm. Because the left atrium heart walls have been stretched thin in an enlarged heart, it is easier to puncture them when doing a left atrium ablation. Surgeons also are reluctant to operate on someone with an enlarged heart. (Some people, like Lance Armstrong and other athletes, have a naturally larger heart due to their levels of physical activity. The above rules would not apply to them.)
    However, some centers do perform PVA(I)s on patients with an enlarged heart. Newer ablation techniques are less likely to puncture heart walls. (The author does not currently have a list of centers doing ablations on patients with an enlarged heart. But if you email me, I will try to find someone near you: afibfriend@verizon.net.}
    If you have A-Fib, you should have your left atrium measured to see if it is being enlarged.
    One of the benefits of a successful PVA(I) (besides curing A-Fib) is that it often reduces an enlarged left atrium.⁴⁰

    55. "I am 82 years old. Am I too old to have a successful Pulmonary Vein Ablation? What doctors or medical centers perform PVAs on patients my age?"
    I don't know if there is an age limit to having a successful PVA and what that age limit might be. A formal or informal survey needs to be done of the major A-Fib centers to answer these questions. I've heard of a successful PVA on someone 92 years old. (This is a very important question since so many people in their 80s are getting A-Fib.)
    Ultimately it's a question only you and your doctor can answer based on your individual needs, health, medical history, how your A-Fib affects you, etc.
    I don't know of any doctors or medical centers who specialize in patients over 80 years old who need PVAs. Unfortunately I have heard of some centers who have a policy of not taking patients over 80 years old.

    56. "I've had a successful Pulmonary Vein Ablation (Isolation) procedure a year ago. I'm in normal sinus rhythm and have been A-Fib symptom free. Will my A-Fib eventually return over time, or am I permanently cured?" 
    We can't answer definitively yet whether a successful PVA(I) is permanent. PVA(I)s are relatively new. (The author had his PVA(I) in 1998 when he was 57 years old, and hasn't had an A-Fib symptom since. However, at that time only one of his Pulmonary Veins was isolated. In theory the other veins could start producing A-Fib signals. But that hasn't happened.)
    There is a tendency for ablated heart tissue to heal itself, regrow the ablated area, reconnect, and start producing A-Fib signals again. (See Third and Fourth PV Isolation/Ablation Procedures.) But if this happens, it usually occurs within approximately the first six months of the initial PVA(I) (but see the recent January, 2010 research mentioned below.).
    However, when the PV is isolated and disconnected and hasn't reconnected, it seems to be permanent. Intuitively it makes sense that A-Fib wouldn't reoccur in areas that were successfully ablated and that haven't reconnected. But it's too early in the history of PVA(I)s to say this definitively.
    Recent research (January, 2010) indicates that for a small number of people, a successful Pulmonary Vein Ablation (Isolation) procedure may not be a permanent "cure." Dr. Francis Marchlinski of the Un. of Pennsylvania persuaded patients who had experienced successful PV ablations and who were A-Fib symptom free, to be re-examined in the EP lab. He found that some had Regrowth/Reconnection in their ablated vein openings even though they were A-Fib symptom free. He also examined patients who had Regrowth/Reconnection and reoccurrence of A-Fib after a successful PV ablation.
    He estimated that there is a 5-6% chance of Regrowth/Reconnection each year, out to five years. He doesn't have data for beyond five years.
     If you want more specific information about your ablation procedure, ask your doctor or his office for your O.R. (Operating Room) report. (It's very technical. You can email or send me a copy if you want help reading it [Feedback]. See the Operating Room Report question.)
(Thanks to A-Fib Support Volunteer Jerry for helping write this answer.)

    57. "I just had Pulmonary Vein Ablation (Isolation) (PVA) procedure, but I still don't feel quite right? How long does it take before I know the procedure was a success? Also, I've got bruising on my leg, my chest hurts, and I have a fever at night. Is this normal?" (Thanks to Marva Harp for this question.)
    Some people feel great and are in perfect sinus rhythm after a PVA(I) procedure. But for most of us it usually takes two or three months for the ablation scars to heal and for our heart to learn to beat normally again. Doctors sometimes help this process by prescribing antiarrhythmic meds for a month or longer. You may also have to continue to take Coumadin for a while.
    Right after the PVA(I) you may experience the following:
    1. Your groin will generally have two access site points, one on each side. After a Pulmonary Vein Ablation, some minor bruising is common at each site with minor soreness as if you had banged the area.  Bruising may occasionally be seen to extend down the leg. This is normal, as is an occasional small quarter sized bump in the area.  (If larger swelling or more significant pain occurs at the area, please contact the electrophysiologist who did the procedure.) One of the reasons for this bruising is the heavy dose of blood thinners you were administered during your ablation procedure to prevent a possible stroke.
    2. After an Pulmonary Vein Ablation you may have some minor chest pain for the next week or so. The pain will often worsen with a deep breath or when leaning forward.  This is pericardial chest pain from the ablation and is generally not of concern.  It should resolve within a week, although it might increase for a day or so after the ablation. (The author speculates that this chest pain may be due to the heat from the catheter ablation burns which may temporarily irritate the Pericardium, the sac around the heart.)
    3. Low grade fevers of around 99 degrees are common in the first day or so post-ablation. (If you develop unexplained fevers exceeding 100 degrees anytime within the first 3 weeks post-ablation, you need to contact the electrophysiologist who performed your procedure.) 

    58. "Where can I get more information on what was done to my heart during my Pulmonary Vein Ablation?"
    Ask your doctor or his office for your O.R. (Operating Room) report. This is a technical, detailed, step-by-step account of what the doctors found in your heart and what was done. Because it is technical and hard to understand, it isn't normally given to patients unless they ask for it. (If you need help understanding it, email or send me a copy [Feedback]. Together we can probably figure it out.)

    59. "I've had a successful Pulmonary Vein Ablation to cure my A-Fib. Do I still need to be on anticoagulants like Coumadin or aspirin?"
    If you don't have any symptoms, you probably are A-Fib free and have less chance of getting A-Fib again than most other people. However, though "cured" of your A-Fib, you may still be experiencing silent A-Fib (A-Fib with no symptoms) which can be dangerous, according to studies presented at the 2006 Boston A-Fib Symposium (See Kottkamp and Calkins).
    Since Pulmonary Vein Ablation of A-Fib is a relatively new procedure, we don't have enough historical perspective and case studies yet to answer definitively whether or not you need to continue taking anticoagulants. This is a judgment call for you and your doctor. However, your chances of getting an A-Fib stroke are practically eliminated if your heart is in normal sinus rhythm. But even people who don't have A-Fib can get a stroke. Currently there is no medication or treatment that would absolutely guarantee one would never get a stroke, even for people in normal sinus rhythm.
    Taking a low dosage anticoagulant like a baby aspirin (81 mg) every day isn't likely to harm you and is actually recommended for overall heart health and stroke prevention.²⁹
    Jay S asks, "Which is preferred to prevent the possibility of a stroke in the event my A-Fib re-occurs---a baby aspirin dosage of 81 mg or a 325 mg?"
    After a successful Pulmonary Vein Ablation (Isolation), doctors usually keep you on Coumadin for three to six months while your heart heals. Re-growth or re-occurrence is less likely to occur after six months and doesn't occur often enough to justify keeping "cured" A-Fib-ers on Coumadin.
    For people with normal sinus heart rhythm, doctors sometimes suggest taking a baby aspirin (81mg) once or twice a day. A baby aspirin twice a day may give you as much help as a 325 mg tablet once a day with a lessened risk of stomach upset and ulcers. But realize that two baby aspirins or a 325 mg aspirin a day will not guarantee that you will never have a stroke.
    (The enteric coating on baby aspirin may prevent its effective absorption. However, it’s hard to find non-enteric coated baby aspirin. What some people do is chew the baby aspirin to get rid of the enteric coating.)
    The author does not know the answer to Jay S's question as to which is better---baby aspirin 81 mg or 325 mg. He invites anyone with insights to write him at afibfriend (at) verizon.net (the "@" is written as "at" to prevent access from automated spam).

    60. "I just had a Pulmonary Vein Ablation. But my A-Fib feels worse and is more frequent than before the ablation, though I do seem to be improving each week. My doctor said I shouldn't worry, that this is normal. But I feel terrible. Is my ablation a failure?"
       You won't know if your ablation is a success for about three months. It takes that long for your heart to heal.
    There is a period of time (which varies from patient to patient) when the A-Fib may seem to get worse. This happens in some people because of the inflammation and trauma to the heart and body tissues caused by the catheter ablation burns and the poking around in your heart during the procedure. These can seem to exacerbate your A-Fib. (An ablation procedure doesn't create new A-Fib producing areas in your heart, though it may stir up existing A-Fib areas temporarily.)
    Another reason you may still have A-Fib is because of gaps in the ablation lines. In the most common A-Fib ablation procedures used today, doctors try to create ablation lines around your pulmonary vein openings to isolate them from the rest of your heart. (A-Fib producing areas are usually found inside your pulmonary vein openings.) But it's difficult making continuous, perfect ablation lines. Sometimes there are gaps in those lines which let A-Fib signals through. But as your heart heals, these gaps usually fill in gradually with scar tissue that reaches its thickest size at the end of three months.

    Remember, also, that it isn't the end of the world if your ablation isn't a total success. Some 15-20% of ablations are not successful. These patients have to go back for a second ablation (including myself). This second ablation is usually, though not always, easier than the first. Often all the doctor has to do is ablate any gaps that haven't filled in or ablate where there has been re-growth/re-connection. See Second Ablations.
    In general, if you're in sinus rhythm after the third month, the chances are good you'll stay in sinus rhythm. If you're in sinus rhythm after the sixth month, the chances of a reoccurrence of A-Fib are even less.
    However, reoccurrence of A-Fib does happen. Many people (as many as 15%-25%) have to go in for a touch up ablation procedure. This usually isn't the doctor's fault.  Heart tissue is very tough. There is a tendency for ablated heart tissue to heal itself, re-grow the ablated area, reconnect, and start producing A-Fib signals again. (See Third and Fourth PV Isolation/Ablation Procedures.) (See the  question, "Am I permanently cured?"

    61. "I am having a Pulmonary Vein Ablation next week for my A-Fib. Because i love to exercise, I am very curious as to what and how much physical activity I can participate in after the procedure. Everything i read says 'You can resume normal activity in a few days.' But i know that what is "normal" is not normal for me. Is there a range of BPM (beats per minute) to keep my heart within? Light walking? Exercising/light weights in the gym? Is there a common road to recovery for those of us who are very physically active?" (Thanks to Monique Van Zeebroeck for this question.)
    Caution would say to start off slow, then work your way up. You could get a Polar (or other) heart rate monitor to keep track of your heart rate. Your heart is considered healed from the scarring of the ablation after three months (possibly sooner).
    Often you feel so good being in sinus rhythm after an ablation, that you can't wait to exercise, to do something physical. But even though you feel great, it's better to be prudent and rein yourself in for a short while.
    (A special thanks to Ed Webb, a very active exerciser, who shares his following experiences and insights.)

It seems the prevailing opinions seem to lean toward resuming normal activities a week to two weeks after the procedure.  In fact that's what my EP had recommended for me (the first time around).  I started light walking and cycling, but unrelated to these activities I also was doing some outside work on my boat (during the fall here in Florida where it can be putrid).  On two separate occasions--I happened to be wearing a heart rate monitor--my heart was a comfortable 85 BPM and then WHAM back into A-Fib!  As I am one of those persistent A-Fibbers, I had to be cardioverted both times.  This all happened within a span of 3 weeks after the procedure.  Needless to say, I was somewhat discouraged thinking the ablation had been a failure.  My EP wasn't too concerned and just advised me to hang in there.  After the second cardioversion, I finally got the hint and took it really easy for the next month, after which I started a walking regimen where I allowed my heart rate to increase from 80BPM on the first day up to 100BPM at an increase of 1 beat per day.  Once I hit the magic 100, I got back on the bike and picked it up from there and was fine after that (until 2 years later when I had another onset!).  The bottom line is I think this all had to do with not allowing enough time for the scar tissue to heal.

 My second time around (which was 2 years ago) I pretty much stuck to the same routine.  First two weeks, absolutely nothing.  Then easy walks allowing my heart rate to increase a little each day.  I walked for a month (starting at 80 and finishing at 105).  After 6 weeks or so, I was back on the bike and doing maximum efforts by the end of 3 months.  I have been in sinus rhythm ever since (that sound you hear is me knocking on my desk!) 

Anyway, I hope this gives you at least one perspective for your recovery.  All the best for your procedure. 

 Chronic (persistent) A-Fib questions.

    61. "I have Chronic Atrial Fibrillation (the heart remains in A-Fib all the time). Am I a candidate for a Pulmonary Vein Ablation? Will it cure me? What are my chances of being cured compared to someone with Paroxysmal (occasional) A-Fib?"
    This is a question that is currently in dispute among researchers in A-Fib.³⁴  However, most clinical studies suggest that Paroxysmal is more frequently curable by PVA(PVI) than Chronic. In fact, the French Bordeaux medical group, considered among the world's leaders in A-Fib research, now uses a combination focal and linear catheter ablation procedure for Chronic A-Fib as compared to a focal ablation procedure for Paroxysmal A-Fib.³⁴ They only consider patients with chronic A-Fib if they have "symptomatic and complicated AF" because of the following reasons: patients with Chronic A-Fib often have "poor hemodynamic tolerance" (their blood isn't being pumped out properly), "suspicion of tachycardiomyopathy" (the heart tissue may have been damaged by the rapid, irregular heart beats or fibrillation), and "suspicion of thromboembolic events" (a greater risk of stroke).³⁴ Linear ablation techniques, though more difficult to perform effectively, may work better for people with chronic A-Fib and/or structural heart disease.³⁵ In a Boston A-Fib Symposium 2006 presentation Dr. Jaïs from the French Bordeaux group reported a study in which 95% of Chronic A-Fib patients were restored to normal sinus rhythm (See Jaïs).
    For someone with Chronic A-Fib, you have a better chance of being cured of your A-Fib if you've been Chronic for a short period of time rather than for a number of years. Does that mean that people with Chronic A-Fib have little hope of being permanently cured by a catheter ablation? No. It's just that right now most heart centers have a long waiting list and have better success rates with Paroxysmal A-Fib.

    62. "I'm eighty years old and have been in Chronic (persistent/permanent) A-Fib for 3 years. I actually feel somewhat better now than when I had occasional (Paroxysmal) A-Fib. Is it worth trying to get an ablation to cure my Chronic A-Fib?"
    With Chronic A-Fib of long duration, perhaps not. Although a few centers get very good results when treating Chronic A-Fib even of long duration (the French Bordeaux group achieves an acceptable success rate after 2 ablations), most centers have a success rate of only around 50% for Chronic A-Fib. And although catheter ablation is a low risk procedure, there are still risks.
    Many centers won't ablate patients who are over 80 years old or in Chronic A-Fib for over a year. There is a higher risk of complications in older people, and it is more difficult to ablate Chronic A-Fib. (In Chronic A-Fib there are often multiple spots in the heart producing A-Fib signals. It's hard to identify and ablate [isolate] them all.)

The Positive Side of being in Chronic A-Fib
    Sometimes people feel relieved to be in permanent A-Fib. There's no longer the fear, uncertainty, and shock of an A-Fib attack. You can adjust your lifestyle to how your heart behaves, because it doesn't change much. You may be short of breath, somewhat light headed, tired, and unable to work or exercise hard. But you get used to it. You may even feel better than when you had Paroxysmal A-Fib. In addition, an ablation may be only partially successful and have the unwanted consequence of putting you back into Paroxysmal A-Fib.
    You still need to take blood thinners to prevent an A-Fib stroke. But if you get the Watchman device installed (very low risk), it closes off your Left Atrial Appendage where 95% of A-Fib clots originate. You can then go off of Coumadin.

The Negative Side of being in Chronic A-Fib
    The down side of being in Chronic A-Fib is your heart forever and always will not pump properly. Blood flow to your brain and other organs is reduced by about 15%-30%.^{132, 164, 165} This can lead to conditions like dementia and Alzheimer's.98^{, 163, 76} (If you are a superior athlete like a bicyclist or runner, your exercise may overcome this reduced blood flow.)
    A-Fib is a progressive disease. It tends to get worse even in Chronic A-Fib. Your atria expand and stretch. Your ejection fraction diminishes. Chronic A-Fib produces fibrosis and collagen deposits which stiffen the heart and make it less flexible. All this leads to conditions such as Congestive Heart Failure, Cardiomyopathy¹⁶¹, heart weakness, heart attacks, etc.^{77, 61, 167}
    But please weigh the above statements carefully (the author is concerned that they may create unwarranted fear). How do you feel? If you don't feel any symptoms and your doctor says your heart isn't enlarging and/or developing poor ejection fraction, etc., then there's no need to rush out to get a Pulmonary Vein Ablation which does involve real risk.

The Bottom Line
    You can be cured of Chronic A-Fib, even at your age. But it will take at least 2 ablations. And it won't be easy finding a doctor to do it. (There is a short list of doctors at specialists in persistent/chronic a-fIB. You need someone with a proven track record in ablating Chronic A-Fib.) However, an ablation is more risky at your age.
    On the other hand, you can live in Chronic A-Fib. Many people do. The key to living a satisfying life in Chronic A-Fib may be good rate control. For example, a resting heart rate of around 80 beats per minute with an exercise rate of 110 is very close to that of a normal person. People with good rate control of their Chronic A-Fib report a good quality of life and seem less prone to develop other heart or mental problems.
    Are you happy or content with your quality of life in Chronic A-Fib? If so, then the added hassles and risks of an ablation are probably not worth it for you. Only you (and your doctor) can decide if it's better to spend your twilight years in a perhaps reduced but satisfactory quality of life.

    63. "I am in Chronic (all-the-time) A-Fib. I feel tired and a little light-headed, probably because my atria aren't pumping properly. Is there any way I can improve my circulation, without having to undergo a Catheter Ablation (poor success rate and risky at my age) or Surgery (even more risky)?"
    In theory, yes.
    In Chronic A-Fib it's not unusual to feel tired and light-headed. Your atria are fibrillating instead of pumping blood into the ventricles.  Blood flow to your brain and other organs is reduced by about 15%-30%.^{132, 164, 165}
    But your ventricles still function by suctioning blood from the atria much like a turkey baster sucks up liquid. You can improve to some extent the strength and capacity of your ventricles by exercise, such as by walking on a treadmill or at the Mall.
    You can also improve the oxygen saturation of your blood by using an Oxygen Concentrator ($500-$1,000). While on a treadmill, for example, you can breath in concentrated oxygen through a cannula, a flexible tube you insert into your nostrils. You can measure how much oxygen is in your blood by using an pulse oximeter ($50). The desired range is 95-100% oxygen saturation. (Some athletes with good circulation use this technique to improve their athletic performance.)
    However, the author is unaware of any studies demonstrating the effectiveness of the above techniques for Chronic A-Fib patients. (An interesting research study would be to examine Chronic A-Fib patients before and after an exercise program and/or concentrated oxygen to see if there is any real change in their circulation or if they feel better.)

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