Patent ID: 7983749
Filing Date: 2011-07-19
Classification: A61N

Abstract:
1. A cardiac rhythm monitoring or management system, including: a sensing circuit configured for sensing an intrinsic electrical heart signal, the sensing circuit having a frequency response that is time-dependent during a first time period initiated by at least one of a detected pacing therapy event or a detected evoked or detected intrinsic heart chamber contraction event of the heart signal, the sensing circuit configured to trigger a frequency response that is temporarily less sensitive to detecting evoked and intrinsic events of the heart signal followed by gradual adjustment of a frequency bandwidth of the frequency response as a function of an elapsed time relative to the event such that the frequency response gradually becomes more sensitive to detecting evoked and intrinsic heart chamber contraction events of the heart signal, the elapsed time measured or received by the sensing circuit during the same cardiac cycle as the event, to restore the frequency response within a time period of less than or equal to 500 milliseconds such that the frequency response is restored during the same cardiac cycle as the event.