Atrial Fibrillation

 

What is atrial fibrillation?

Atrial fibrillation (also called AFib or AF) is a quivering or irregular heartbeat (arrhythmia) that can lead to blood clots, stroke, heart failure and other heart-related complications. At least 2.7 million Americans are living with AFib.

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Watch, Learn and Live

See your cardiovascular system in action with our interactive illustrations and animations.