Why Do Blood Clots Form in Atrial Fibrillation?

By Dr. Kirk Laman: Wholehearted Cardiologist, Health Pro Tuesday, September 29, 2009
Blood clots are the dreaded complication of the abnormal heart rhythm aka, Atrial Fibrillation.  By itself the rhythm rarely is fatal. What makes it a serious heart condition is the fact that blood clots commonly form if the rhythm is not treated properly.  Atrial Fibrillation is an irregul...
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Anonymous
worried wife
1/24/10 11:11am

My husband is 69 years old and was diagnosed with A-fib. the week before Thanksgiving when his heart rate was found to be 140+.  He has COPD and has had a triple heart by pass in 2001.  He was placed on Warfarin and Amiodarone twice a day.  Last Friday he went in for a TEE and cardoiversion.  The dr was unable to do the cardioversion because of what seems to be a blood clot in the left atrium chamber.  Naturally I was concerned when he sent us home with no restrictions and is continuing the medicines.  Should I be concerned?  I just read an article on another website published last week about how this chamber forms blood clots that result in strokes!  What questions should I be asking the cardiologist and how do they dissolve the blood clot?

5/17/10 8:40pm

My husband is 68 yrs old. Just a a pace maker put in, Prior to having it put in heart rate was 35 to 40 beats per minute.  Had 2 tia minor prior to pacemaker, Had a tee showed Big Blood clot in the upperchamber like your husband has with no restrictions. i know since he had pacemaker he as had another tia minor found out he also has atrial fibrillation with no restrictions.  His this fatal he was put on Lovinnox, he is allergic to it Had to stop taking it, now just on wafarin.  His this fatal Should I be concerned to.

10/30/10 2:17am

The blood begins to clot, if it stops and becomes stagnant. Vein thrombosis occurs when a person becomes immobilized, and the muscles are not contracting to push blood to the heart. This stagnant blood begins to form small lumps along the mountain walls of the vein that gradually grows partially or completely block the vein. In atrial fibrillation, the atrium or upper chamber of the heart does not beat an organized manner. Instead, jiggles, and the blood tends to a halt along the walls of the atrium. Over time, this may cause a small blood clot. Blood clots can form the chamber after a heart attack, when part of the heart muscle is injured and can not normally.

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By Dr. Kirk Laman: Wholehearted Cardiologist, Health Pro— Last Modified: 12/24/11, First Published: 09/29/09