A malfunction in the heart's electrical system that causes the heart to beat slower than it should.
Condition in which electrical signals in the heart are blocked, causing the heart to beat out of sync.
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.
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.
Patients with A-fib benefit from specialized anesthesiology. Learn more about this treatment.
Atrial fibrillation is a heart rhythm problem that causes irregular heartbeat (arrhythmia) and abnormal blood flow.
A battery-operated device that is surgically implanted in the chest to detect and correct life-threatening heart arrhythmias.
A cardiac pacemaker is an implantable device that sends electrical pulses to the heart to correct a slow heart rate.