Patent ID: 8639330

Claim:
An implantable cardiac rhythm management device, comprising: a plurality of electrodes, at least a first electrode of the plurality of electrodes configured to electrically couple to a first ventricle and at least a second electrode of the plurality of electrodes configured to electrically couple to a second ventricle; an energy output circuit, coupled to the first and the second electrodes and configured to deliver electrical energy to the first and second ventricles via the first and second electrodes; an arrhythmia detection circuit configured to detect a ventricular tachyarrhythmia episode; and a processor coupled to the arrhythmia detection circuit and configured to control the energy output circuit to deliver anti-tachyarrhythmia pacing (ATP) therapy to the first and second ventricles via the first and second electrodes, wherein delivery of the ATP therapy includes pacing a primary ATP site and pacing at least one secondary ATP site during each cardiac cycle using an ATP offset interval between the primary ATP site and the secondary ATP site, the ATP offset interval based on a time delay between an intrinsic depolarization at the primary ATP site and an intrinsic depolarization at the secondary ATP site during ventricular tachyarrhythmia.