METHOD AND APPARATUS FOR ACCURATE SEPARATION OF SUPRAVENTRICULAR TACHYCARDIA FROM VENTRICULAR TACHYCARDIA DURING POSTURE CHANGES

摘要

An implantable medical device system includes an implantable cardioverter defibrillator (ICD) for detecting and treating ventricular tachycardia (VT). The ICD includes a sensing module for sensing a cardiac signal from selected cardiac signal sensing vectors. A control module generates morphology templates of the cardiac signals for multiple patient postures for each of the available sensing vectors. A cardiac signal received during an unknown cardiac rhythm is compared to the morphology templates without determining a current posture of the patient. The unknown cardiac rhythm is detected and classified as supraventricular tachycardia in response to the cardiac signal matching at least one of the morphology templates.