Atrial fibrillation is a heart rhythm problem that causes irregular heartbeat (arrhythmia) and abnormal blood flow.
A type of abnormal heart rhythm in which the heart beats too quickly.
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.
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.
A heart murmur is an extra, unexpected sound made by the blood as it flows through the heart.