What is Atrial Fibrillation? | American Heart Association
https://www.heart.org/en/health-topics/atrial-fibrillation/what-is-atrial-fibrillation-afib-or-af
WEBMar 23, 2023 · Home. Health Topics. Atrial Fibrillation. What is Atrial Fibrillation? Video: Learn about AFib and your heart. Atrial fibrillation is a quivering or irregular heartbeat, or arrhythmia. Atrial fibrillation, also known as AFib or AF, can lead to blood clots, stroke, heart failure and other heart-related complications.
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