Atrial Fibrillation (Irregular Heartbeat)
Atrial Fibrillation (AFib) is the most common type of irregular heartbeat (arrhythmia). AFib happens when the heart's electrical signals don't travel through the heart in a normal way. Instead, they become very rapid and disorganized. These disorganized electrical signals cause the heart's two upper chambers (atria) to fibrillate, or contract very fast and irregularly. In patients with AFib, blood pools in the atria. It isn't pumped completely into the heart's two lower chambers (ventricles). As a result, the heart's upper and lower chambers don't work together as they should.
Symptoms, medical complications, and treatment options vary among individuals.
Patient Story: A Life Without AFib