Atrial fibrillation is a cardiac arrhythmia in which the upper chambers of the heart the atria beat irregularly and, often, rapidly. The condition occurs as a consequence of uncoordinated ...

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Atrial fibrillation, or A-fib, is an irregular heart rhythm that increases a person’s risk of stroke, heart failure, and even premature death. While many risk factors contribute to A-fib ...

Atrial fibrillation is the most common type of sustained cardiac arrhythmia—or abnormal heart rhythm—in the world. It develops when the electrical signals in your heart are triggered out of ...

Some clinicians prefer aspirin when balancing bleeding risk with the indication for an anticoagulant, Barnes said, reasoning ...