Cardiac stimulation device and method providing pacemaker mediated tachycardia detection during biventricular pacing stimulation

摘要

An implantable cardiac stimulation device provides biventricular pacing and pacemaker mediated tachycardia (PMT) detection. The device includes a pulse generator that provides right ventricular and left ventricular pacing pulse pairs to a right ventricle and left ventricle of a heart in a biventricular pacing mode. A sensing circuit senses activations of an atrium of the heart and a pacemaker mediated tachycardia detector times a plurality of V-P intervals from first issued pacing pulses of each pacing pulse pair to sensed activations of the atrium. A limit circuit of the PMT detector sets V-P interval limits response to the plurality of timed V-P intervals and a compare circuit determines if a last timed V-P interval is within the V-P interval limits. The timed V-P intervals are preferably recorded in a histogram format.