Patent ID: 8374691
Filing Date: 2013-02-12
Classification: A61B,A61N

Abstract:
1. For use by an implantable system, a method for discriminating between ventricular tachycardia (VT) and supraventricular tachycardia (SVT), comprising: (a) detecting atrial intervals indicative of atrial rate and ventricular intervals indicative of ventricular rate within a window leading up to and following the onset of a tachycardia; (b) determining whether a valid atrial interval decrease is detected within the window by (c) determining whether a valid ventricular interval decrease is detected within the window by (d) discriminating between VT and SVT based on results of step (b) and (c); wherein step (d) comprises determining that the detected atrial intervals and the detected ventricular intervals within the window are indicative of SVT if both a valid atrial interval decrease is detected and a valid ventricular interval decrease is detected within the window, and the valid atrial interval change occurs prior to the valid ventricular interval change.