Heart & Cardiology/curious


hi there,

1)Why does Afib increase the chance of a person getting a stroke?

2) If someone has AFib & has a low level of overall cholesterol in their system as well as low LDL &  high HDL cholesterol, including a low level of triglycerides, would the person still have an increased risk of getting a stroke?  I would assume that, under those circumstances, there wouldn't be, [or] that the risk of stroke would be reduced significantly...

         Thank you

Hello Dan,

1) In afib, the upper chambers of the heart (atria) don't contract, just quiver, so clots can form in the atria and then wash out and float in the blood stream to the brain, where they block an artery and deprive that art of the brain of blood supply so it dies.

2) No, normal cholesterol doesn't decrease the risk of stroke in someone with afib.

Please write back if this note doesnít answer all your questions.

David Richardson

Heart & Cardiology

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David Richardson


Adult heart function and disease. Not very good about children lesss than 12. Hypertension is o.k. Heart rhythm a special interest.


Certified in cardiology by the American Board of Internal Medicine. Was chairman of division of cardiology at the Medical College of Virginia. Am now mostly retired.

Fellow of American Heart Association and American College of Cardiology and member of American Physiological Society..

Circulation, American Heart Journal, Hypertension.

M.D. from Harvard Medical School. Residency training at Yale Uhniversity School of Medicine and Medical College of Virginia.

Awards and Honors
Gold Heartt Award from American Heart Association in 1995.

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