ANTI-TACHYCARDIA PACING FOR LOW POWER IMPLANTABLE MEDICAL DEVICES

摘要

A device is provided for managing anti-tachycardia pacing therapy delivered by an implantable medical device (IMD) (500). The device detects events from cardiac signals sensed at electrodes (510, 518) of the IMD (500). The cardiac signals represent a ventricular tachycardia (VT) episode that includes at least a select number of VT events having a corresponding VT cycle length. The device analyzes the VT cycle length to define an anti-tachycardia pacing (ATP) therapy that includes a first coupling interval and deliver a first ATP pulse that is spaced the first coupling interval after a reference refractory VT event sensed at the electrodes (510, 518). The device delivers a second ATP pulse following the first ATP pulse by a non-stimulation segment that is at least one and three-quarters (1.75) times a projected VT cycle length.