According to the American Heart Association, about 2.2 million Americans have atrial fibrillation – one type of arrythmia. Arrhythmia is an abnormal heartbeat. The most common symptom is a rapid, erratic heartbeat. Some patients experience lightheadedness, dizziness or shortness of breath. You should get immediate attention if you can’t breathe, you pass out or if your heart keeps racing.
Learn more about arrhythmia, including the causes, treatment and prevention