IMPLANTABLE MEDICAL DEVICE FOR DISCRIMINATING TACHYCARDIAS BASED ON A RETURN CYCLE LENGTH

摘要

A medical device (10) for classifying a tachycardia according to a site of origin of the tachycardia. Cardiac signals are sensed and a tachycardia event is detected in response to the sensed cardiac signals. Pacing pulses are delivered and a time interval corresponding to a distance traversed by a depolarization associated with the last one of the pacing pulses from a site of delivery of the plurality of pacing pulses is determined. The tachycardia event is classified according to a site of origin in response to the determined time interval.