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Doctor insights on: Why Does Atrial Fibrillation Cause Strokes

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Why does atrial fibrillation cause strokes?

Why does atrial fibrillation cause strokes?

Standstill: The extremely rapid rates of atrial fibrillation are in fact so fast that they create two problems: the top chamber is not mechanically moving very far at all, so it cannot shake clots loose, in the overactive atrial tissue secretes chemicals which increase the likelihood of clot formation. These processes come together to substantially increase stroke risk. ...Read more

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Dr. John Garner
1,803 doctors shared insights

Atrial Fibrillation (Definition)

Atrial fibrillation is an irregular and often rapid heart rate that commonly causes poor blood flow to the body. During atrial fibrillation, the heart's two upper chambers (the atria) beat chaotically and irregularly — out of coordination with the two lower chambers (the ventricles) of the heart. Atrial fibrillation symptoms include heart palpitations, shortness ...Read more


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Am i at an increased risk of stroke? With atrial fibrillation, am i at increased risk of having a stroke?

Am i at an increased risk of stroke? With atrial fibrillation, am i at increased risk of having a stroke?

Usually yes.: I'm assuming you're a woman, which makes the answer a definite "yes." the only question then is how much extra. Google yourself something called a "cha2ds2-vasc calculator" and plug in your info. The baseline population risk is ~0.8%/year for comparison. ...Read more

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Purpose of arixtra in the prevention of stroke in patients with atrial fibrillation?

Low molecular wt hep: It's a low molecular weight heparin, given subcutaneously to anti-coagulate ("thin the blood") and prevent clotting. ...Read more

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Atrial fibrillation... What type of pain occurs before and during heart attack or stroke?

Atrial fibrillation... What type of pain occurs before and during heart attack or stroke?

Heart: Anterior crushing pressure with arm extension- radiation. Angina= neck pain or "feeling" impending doom! anxiety shortness of breath diaphoresis ='sweaty clammy nothing- ladies dismiss any symptoms. ...Read more

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What is the role of arixtra in the prevention of stroke in patients with atrial fibrillation?

What is the role of arixtra in the prevention of stroke in patients with atrial fibrillation?

Limited: This particular agent is only given subcutaneously so its use is pretty much limited to, if we just focus on atrial fibrillation here, those patients who cannot take an oral anticoagulant but are felt by their doctors to be at high risk for an embolic stroke or event in the setting of atrial fibrillation. There are oral medications that have similar mechanisms of action and validated efficacy. ...Read more

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What is the role of arixtra in the prevention of stroke in patients with atrial fibrillation?

What is the role of arixtra in the prevention of stroke in patients with atrial fibrillation?

They haven't paid up: Until they they go through untrackable bribing process and get the indication, just have to use unofficially. ...Read more

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What meds can I use to control my a fib? What are the risks and side effects of medications to control my atrial fibrillation or to reduce the risk of stroke? What are the risks/benefits of other treatment options?

What meds can I use to control my a fib? What are the risks and side effects of medications to control my atrial fibrillation or to reduce the risk of stroke? What are the risks/benefits of other treatment options?

The : The treatment of atrial fibrillation has two important components: 1) treating the rhythm, and 2) preventing stroke. There are two strategies for treating the rhythm. The first is called the rate control strategy, and involves using medicines to prevent the heart rate from going too fast. These medicines do not prevent atrial fibrillation episodes, but are generally effective at preventing fast rhythms and also tend to have few side effects. This is a good strategy for people who do not have severe symptoms from atrial fibrillation, such as older less active people. The second strategy is called the rhythm control strategy, and involves using medications that are designed to maintain normal sinus rhythm and prevent episodes of atrial fibrillation. This strategy may be more desirable for people who are vey symptomatic when in atrial fibrillation such as young, active people. Unfortunately, this strategy tends to be less successful because recurrence of atrial fibrillation is common. The rhythm control medications also tend to have more side effects than the rate control medicines, and in some cases the side effects can be severe. Neither strategy is better than the other at preventing stroke. For stroke prevention, warfarin (also called coumadin) is typically used for people at moderate or high risk. This medication has been shown to be superior in preventing stroke, but it also increases the risk of dangerous bleeding because it is a blood thinner. Patients at lower risk for stroke may just take an Aspirin tablet daily. This has a lower bleeding risk than warfarin. Lastly, some people are candidates for surgical or catheter-based ablation procedures. These procedures can cure atrial fibrillation, but are not always successful and not all people are good candidates. ...Read more

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Father, 69, requires Cataract surgery in both eyes. He's on Dabigatran, Clopidogrel for Heart attack, Atrial Fibrillation, Vascular Stroke for 3 years. Had minor strokes in 2008 and 2009. Need advice on cataract surgery while on dabigatran, any risks?

Father, 69, requires Cataract surgery in both eyes. He's on Dabigatran, Clopidogrel for Heart attack, Atrial Fibrillation, Vascular Stroke for 3 years. Had minor strokes in 2008 and 2009. Need advice on cataract surgery while on dabigatran, any risks?

Dabigatran /cataract: Yes. dabigatran can cause more bleeding during surgery, which could affect the surgery .Many times they have patients in the hospital on heparin 1 day before the surgery and then stop the heparin 3-4 hours before surgery and restart meds after surgery This is an issue that has to be discussed with the cardiologist and surgeon especially since your father has had strokes f/u w/ cardiology ...Read more

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Father, 69, requires Cataract surgery in both eyes. He's on Dabigatran, Clopidogrel for Heart attack, Atrial Fibrillation, Vascular Stroke for 3 years. Had minor strokes in 2008 and 2009. Need advice on cataract surgery while on dabigatran, any risks?

Father, 69, requires Cataract surgery in both eyes. He's on Dabigatran, Clopidogrel for Heart attack, Atrial Fibrillation, Vascular Stroke for 3 years. Had minor strokes in 2008 and 2009. Need advice on cataract surgery while on dabigatran, any risks?

Cataract surgery: while on anticoagulation therapy: this is a judgmental call amongst the ophthalmic surgeon and the anaesthesiologist. Generally for surgical procedures or spinal anesthesia, anticoagulaton needs to be discontinued before the surgery, as for Dabigatrean, 1-2 days prior to surgery and resumes after, while the clopedogrel you to hold 5 days prior to elective surgery. Again refer to the treating team ...Read more

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Does atrial fibrillation cause fainting?

Does atrial fibrillation cause fainting?

Afib cause faint?: It is unlikely but i guess possible. The most common cause of faint is "vaso vagel syncope ". This is like after standing a long time, at the sight of blood, etc. ...Read more

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Fibrillation (Definition)

Fibrillation is the rapid, irregular, and unsynchronized contraction of muscle fibers. An important occurrence is with ...Read more