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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?

Clot formation: Because blood in the left atrium is not propelled forward normally during atiral fibrillation, it allows for the formation of clots. Small areas of blood pooling resembling little eddy currents allow blood to slow down and form clots. If one of these clots is then propelled forward it can travel to the brain, become lodged in a blood vessel and cause a stroke.A clot the size of a pinhead can do it. ...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


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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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What can cause atrial fibrillation?

Atrial fibrillation: Atrial fibrillation , or afib, is a very common rhythm disturbance, the most common in this country. It is most often associated with hypertension, but can also be associated with valvular disease specifically mitral valve disease. It can be treated with either rate control or converting back to the normal sinus rhythm. Patient are often placed on blood thinners to prevent complications. ...Read more

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How does tyramine cause you atrial fibrillation?

How does tyramine cause you atrial fibrillation?

Vasoactive amine: Tyramine is derived from the Amino Acid tyrosine. Increased tyramine can cause increases in dopamine, Epinephrine & norepinephrine (particularly when taking an mao-inhibitor). This can result in increased blood pressure, and it can also cause abnormal heart rhythms, including atrial fibrillation. The 1st reported case of atrial fibrillation caused by tyramine was in grimsby, england, in 1987. ...Read more

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Why the atrial fibrillation causing thromboembolic phenomena while atrial flutter don't cause it?

Why the atrial fibrillation causing thromboembolic phenomena while atrial flutter don't cause it?

Short answer: Atrial fib has increased risk secondary to irreg.firing of atria and valves causing damage to blood cells. In flutter there is a more regular rate and atrial contractile function offers some protection but there is still a slightly increased risk. In chronic flutter, coagulation is necessary given the risk of stroke is the same as atrial fib. Pts with chronic flutter often have a fib as well. ...Read more

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Will hypovolemia cause atrial fibrillation?

It can: The stress of hypovolemia can trigger reflex tachycardia and atrial fibrillation, especially in a diseased heart. ...Read more

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Can hypertension cause atrial fibrillation?

Can hypertension cause atrial fibrillation?

Yes: Atrial fibrillation is an irregularly irregular heart rhythm , it can happen when the atrium( upper chamber of the heart) is enlarged. Hypertension causes the heart to work harder, develops hypertrophy to have enough force to push the blood forward from the ventricle ( lower chamber of the heart); the atrium in turn enlarges to push blood to ventricle and eventually dilates then a-fib develops. ...Read more

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How can tyramine cause atrial fibrillation?

Vasoactive amine: Increased tyramine can cause increases in dopamine, Epinephrine & norepinephrine (particularly when taking a type of drug called an mao-inhibitor). This can result in increased blood pressure, and it can also cause abnormal heart rhythms, including atrial fibrillation. The 1st reported case of atrial fibrillation caused by tyramine was in grimsby, england, in 1987. ...Read more

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Can Lisinopril cause atrial fibrillation?

Can Lisinopril cause atrial fibrillation?

No: My answer would be NO. I reviewed reliable sources and atrial fibrillation is not listed as a side effect. I found a website with a very unscientific survey among people taking lisinopril who have developed afib, but without any scientific rigor at all. Most people that need lisinopril already have other reasons to develop atrial fibrillation. I hope this helps. ...Read more

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Does cinnamon cause atrial flutter?

Does cinnamon cause atrial flutter?

No: Atrial flutter is usually caused by an electrical loop signal in the top part of the heart called at the atrium. Cinnamon is not the cause of atrial flutter. ...Read more

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Can Hypothroidism cause atrial fibrillation?Thanks

Can Hypothroidism cause atrial fibrillation?Thanks

No: But hyperthyroidism is a common cause. Also, you mention alcohol addition and that's one of the commonest causes. Also age over 70 is a common cause (noting your age). ...Read more

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Does multiple sclerosis cause heart arrhythmias?

Does multiple sclerosis cause heart arrhythmias?

Not usually: Ms originates in the brain and affects skeletal muscles, causing the person to loose voluntary control of them. It can also affect vision, causing optic neuritis and sometimes blindness, double vision or other visual problems. It can also cause cognitive problems and dementia. However, it doesn't typically affect the heart directly. ...Read more

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Why is atrial fibrillation dangerous?

Why is atrial fibrillation dangerous?

Causes strokes: Atrial fibrillation causes stagnation of blood in the atrium contributing to the formation of clots there which may travel to the brain causing a stroke or cva or sudden death. ...Read more

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Can atrial fibrillation cause ed?

No: Afib cannot directly cause ed. Medicines used to treat afib can impair erections and conditions associated with afib such as heart failure, coronary disease also can cause ed. ...Read more

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What makes atrial fibrillation not immediately life threatening while ventricular fibrillation is?

A circuit breaker: The rhythms in the top chamber during atrial fibrillation can reach and exceed 600 bpm. If this were conducted directly to the lower chamber, it would be as fatal as ventricular fibrillation. However, nature built in a circuit breaker called the av node between the two such that only some of the top chamber heartbeats in fibrillation make it to the bottom chamber. ...Read more

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How does atherosclerosis cause heart attacks and strokes?

How does atherosclerosis cause heart attacks and strokes?

Clots and Ischemia: Atherosclerosis, an accumulation of white blood cells within the walls of arteries, typically starts in childhood, artery walls thicken & the opening remains unchanged for decades. Rupture of the endothelial lining over the plaque showers clot inducing tissue into the blood blocking arteries downstream occasionally, clots over the rupture block the opening. Yet majority of events are asymptomatic. ...Read more

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Does atrial flutter usually cause many symptoms?

Does atrial flutter usually cause many symptoms?

Sometimes: Many people with atrial fibrillation and atrial flutter will experience a racing and irregular heartbeat, lightheadness, and feeling off. Some people have no symptoms at all, however. An ekg can pick up this condition. ...Read more

Dr. John Garner
1,839 doctors shared insights

Atrial Fibrillation (Definition)

A quivering or irregular heartbeat that can lead to blood clots, stroke, heart failure, ...Read more