Disorders in the heart's electrical system can lead to arrhythmias, or an abnormal heart rhythm. There are many types of arrhythmias and they're classified by where they occur in the heart and their pattern of abnormality. This segment will explain the arrhythmia known as Atrial Fibrillation.
First-degree heart block is a condition where the wiring of the heart is slow to send electrical signals for the heartbeat. Learn about its causes, symptoms, and treatment.