ventricular premature complex

ventricular premature complex
(VPC) an ectopic beat arising in the ventricles and stimulating the myocardium prematurely. It is characterized by an early, wide, oddly shaped QRS complex with an ST segment and T wave directed opposite to the QRS complex, usually without resetting of the sinus node, and with occasional fusion beats. It may occur in normal hearts but often is indicative of organic heart disease.

Medical dictionary. 2011.

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