CONFIRMING SENSED ATRIAL EVENTS FOR PACING DURING RESYCHRONIZATION THERAPY IN A CARDIAC MEDICAL DEVICE AND MEDICAL DEVICE SYSTEM

摘要

A medical device and system for controlling delivery of stimulation pulses that includes a sensing device to sense a signal and emit a trigger signal in response to the sensed signal, a delivery device to receive the trigger signal and deliver therapy to the patient in response to the emitted trigger signal, and a processor positioned within the sensing device, the processor configured to determine whether the sensed signal exceeds a possible P-wave threshold, compare a portion of the sensed signal to a P-wave template having a sensing window having a length less than a width of the P-wave, confirm an occurrence of a P-wave signal in response to the comparing, emit the trigger signal in response to occurrence of a P-wave signal being confirmed, and inhibit delivery of emitting signal in response to the occurrence of a P-wave signal not being confirmed.