Atrial fibrillation and ventricular fibrillation are both types of irregular heartbeats (arrhythmias). Atrial fibrillation (AFib) affects the two upper chambers of your heart. Ventricular fibrillation ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

Dr. Calkins answers the question: 'Can Atrial Fibrillation Damage My Heart?' — -- Question: Can atrial fibrillation damage my heart in a permanent way, and can it cause a heart attack? Answer ...

Atrial fibrillation is the most common arrhythmia - problems with the speed or rhythm of the heartbeat. Arrhythmias are caused by a disorder in the heart's electrical system. The walls of the atria ...

In the U.S., atrial fibrillation (AF), a heart condition that causes an irregular heartbeat in the upper chambers of the heart, affects up to one in three people in their lifetime. Significant ...