A malfunction in the heart's electrical system that causes the heart to beat slower than it should.
A battery-operated device that is surgically implanted in the chest to detect and correct life-threatening heart arrhythmias.
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.
A cardiac pacemaker is an implantable device that sends electrical pulses to the heart to correct a slow heart rate.
Syncope is a sudden, brief loss of consciousness also known as “fainting.“ Learn about causes and treatment.
Condition in which electrical signals in the heart are blocked, causing the heart to beat out of sync.
A rare tumor that starts in the adrenal glands, leading to excessive levels of adrenaline and other hormones.
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.
Cardiomyopathy is a condition in which the heart muscle has difficulty pumping blood. Learn about symptoms and treatment.
Heart surgery for heart failure helps repair a variety of heart conditions and disorders.