From Simple English Wikipedia, the free encyclopedia
Different forms of cardiac arrhythmia shown in an Electrocardiogram

Arrhythmia (commonly called irregular heartbeat) is the name for a number of conditions, where the heartbeat is not normal. It may be too fast (tachycardia); too slow (bradycardia); or the heart may not beat in its regular rhythm.

Artificial pacemaker is used to care arrhythmia.