An arrhythmia refers to an abnormal rhythm of the heartbeat. Arrhythmias can happen if the heart beats too fast, too slow, or with an irregular rhythm, as is the case with atrial fibrillation, the most common arrhythmia in the United States.
Most arrhythmias are harmless, but some can be serious or even life-threatening. The heart may not be able to pump enough blood to the body. Lack of blood flow can damage the brain, heart and other organs. Common arrhythmias that we treat include: