A malfunction in the heart's electrical system that causes the heart to beat slower than it should.
When electrical abnormalities cause abnormal heart rhythms, this is called a heart arrhythmia. Learn more about the different types of arrhythmia and possible treatments.
An occasional extra heartbeat that disrupts the heart's normal rhythm. This type of extra heartbeat begins in one of the upper chambers of the heart.
Atrial fibrillation is a heart rhythm problem that causes irregular heartbeat (arrhythmia) and abnormal blood flow.
A complete blockage of a coronary artery that lasts for three or more months
An occasional extra heartbeat that temporarily changes the heart's regular rhythm. The extra heartbeat originates in one of the heart's lower chambers.
A heart attack is a condition that blocks blood flow to the heart and causes damage to the heart muscle. Learn about symptoms and treatment.
The term “nerve block“ refers to a procedure that blocks pain from reaching specific nerves. Learn more about this procedure.
Syncope is a sudden, brief loss of consciousness also known as “fainting.“ Learn about causes and treatment.
A heart murmur is an extra, unexpected sound made by the blood as it flows through the heart.