Patent ID: 8364262
Filing Date: 2013-01-29
Classification: A61N

Abstract:
1. A method for operating an implantable cardiac rhythm management device, the method comprising: determining an intrinsic ventricular rate; detecting a sudden increase in the intrinsic ventricular rate; setting a sudden onset flag in response to a detection of the sudden increase in the intrinsic ventricular rate; delivering an anti-tachyarrhythmia therapy in response to the sudden onset flag being set and the intrinsic ventricular rate exceeding a tachyarrhythmia rate threshold; comparing a morphology of one or more heart beats to a template morphology in response to the sudden onset flag being set and the intrinsic ventricular rate not exceeding a tachyarrhythmia rate threshold; and resetting the sudden onset flag in response to the intrinsic ventricular rate falling below a hysteresis tachyarrhythmia rate threshold that is below the tachyarrhythmia rate threshold.