aberrant ventricular conduction

aberrant ventricular conduction (AVC),

the temporary abnormal intraventricular conduction of a supraventricular impulse. It is usually associated with an increase in the duration of the QRS complex to more than 120 msec. This conduction pattern is fairly common after a very premature atrial beat and during the paroxysmal supraventricular tachycardia that is caused by antidromic circus movement tachycardia, also known as Wolff-Parkinson-White syndrome (using the atrioventricular node retrogradely and an accessory pathway antegradely). Also called aberrancy, aberrant conduction, ventricular aberration.