Patent ID: 7218966
Filing Date: 2007-05-15
Classification: A61B,A61N

Abstract:
1. An arrhythmia discrimination method, comprising: sensing electrocardiogram signals at a subcutaneous non-intrathoracic location; receiving signals associated with a non-electrophysiological cardiac source, the received signals comprising at least one of heart sound signals, pulse oximetry signals, impedance signals indicative of cardiac activity, acoustic emission information, blood-flow information, and heart rate information; verifying that the electrocardiogram signals comprise a cardiac signal using the non-electrophysiological signal; discriminating, using the electrocardiogram signals and non-electrophysiologic signals, between a normal sinus rhythm and a cardiac arrhythmia; and withholding delivery of subcutaneous non-intrathoracic cardiac stimulation therapy if the sensed electrocardiogram signals do not comprise the cardiac signal.