Premature Ventricular Complexes (PVCs)

Premature ventricular complexes (PVCs) :

A) occur in the cardiac cycle later than the next expected sinus beat.
B) most often occur for no apparent reason in individuals who have healthy hearts.
C) are early ectopic beats that originate from an irritable focus in the ventricular conduction system or muscle tissue.
D) produce increased ventricular contraction because the impulse spreads from cell to cell across the ventricles.