A malfunction in the heart's electrical system that causes the heart to beat slower than it should.
A type of abnormal heart rhythm in which the heart beats too quickly.
Sudden cardiac arrest occurs when the heart stops pumping, and is a leading cause of death in the United States. Learn about symptoms and treatment.
An occasional extra heartbeat that temporarily changes the heart's regular rhythm. The extra heartbeat originates in one of the heart's lower chambers.
Tachycardia occurs when the heart beats faster than 100 beats per minute. It can occur as a normal response to exercise, fever, stress, or other stimuli. Tachycardia that occurs abruptly and without a clear cause, or when the heart rate increases out of proportion for a given activity is considered abnormal.
Patients with A-fib benefit from specialized anesthesiology. Learn more about this treatment.
Women face unique risks, warning signs and symptoms of heart disease. Here's what women—and men who care about them—need to know about this condition.
Condition in which electrical signals in the heart are blocked, causing the heart to beat out of sync.
Atrial fibrillation is a heart rhythm problem that causes irregular heartbeat (arrhythmia) and abnormal blood flow.
A cardiac pacemaker is an implantable device that sends electrical pulses to the heart to correct a slow heart rate.