Patent ID: 8064996
Filing Date: 2011-11-22
Classification: A61N

Abstract:
1. A method, comprising: sensing a cardiac electrogram (EGM) signal comprising a T-wave signal; detecting a first zero crossing of the T-wave signal before a peak of the T-wave signal; detecting a second zero crossing of the T-wave signal after the peak of the T-wave signal; determining a width of the T-wave signal as an elapsed time between the first zero crossing and the second zero crossing; determining a center of the T-wave signal as a time corresponding to half of the determined width of the T-wave signal; determining a test shock interval based on the determined T-wave signal center; and scheduling a T-wave shock to be delivered at a T-wave shock interval corresponding to the determined test shock interval; and delivering the T-wave shock to a patient at the T-wave shock interval.