Font Size

Definition of Premature contraction of the heart

Premature contraction of the heart: A single heartbeat that occurs earlier than normal. This phenomenon can be within normal limits, or it may represent a medically significant arrhythmia.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 3/19/2012

Medical Dictionary Definitions A - Z

Search Medical Dictionary

Atrial Fibrillation Slideshow

Medical Dictionary