What is atrial fibrillation?
Atrial fibrillation is a quivering or irregular heartbeat, or arrhythmia. Atrial fibrillation, also known as AFib or AF, can lead to blood clots, stroke, heart failure and other heart-related complications.
Learn about AFib
Learn About AFib and Your Heart
AFib can sometimes be felt as a quivering in the chest. Find out what’s happening in your heart during atrial fibrillation and how it can lead to a stroke and other medical problems.
For Health Care Professionals
Stay up to date with resources, information and current guidelines to improve patient care using Get With The Guidelines® - AFib.