Q: What is the difference between atrial fibrillation and supraventricular tachycardia? A: While both conditions are rapid, abnormal heart rhythms that originate in the upper part of the heart, they ...
Atrial fibrillation, or AFib, is the most common type of irregular heartbeat. About 2.7 million Americans have it. AFib happens when the electrical activity of the heart isn’t working the way it’s ...