Apparatus and method for automatically identifying a problem with sensing heart activity

摘要

Systems and associated methods are provided for automatically identifying a problem with sensing heart activity. In use, a plurality of heartbeats is sensed utilizing an implantable medical device. Further, data associated with the heartbeats is collected and stored. To this end, a problem with the sensing of the heartbeats (e.g., oversensing, undersensing, etc.) may be automatically identified and corrected, utilizing the data.

主权项

1. A method for optimizing sensing control parameters associated with an implantable medical device (IMD), the method comprising:
sensing a plurality of baseline heartbeats, utilizing the IMD; collecting data associated with the plurality of sensed baseline heartbeats; storing the data associated with the plurality of sensed baseline heartbeats in a memory; programming first settings of sensing control parameters of the IMD; sensing a plurality of non-baseline heartbeats using the IMD programmed to use the first settings of the sensing control parameters; collecting data associated with the plurality of sensed non-baseline heartbeats; using a circuit to automatically identify a problem with the sensing of the heartbeats using the first settings of sensing control parameters by comparing the data associated with the plurality of sensed baseline heartbeats to the data associated with the plurality of sensed non-baseline heartbeats; automatically determining which chamber of the heart is associated with the problem; automatically determining whether the plurality of sensed non-baseline heartbeats are post-sensed or post-paced, wherein a post-sensed heartbeat is a naturally occurring heartbeat and wherein a post-paced heartbeat is a heartbeat that occurred in response to an administered therapy; automatically determining whether the problem with sensing is over or under sensing; and when the problem with sensing is post-sensed oversensing, automatically determining from the data associated with the plurality of sensed non-baseline heartbeats a worst case scenario by determining:
a smallest intrinsic signal,a largest oversensed signal, anda longest time interval between an intrinsic signal and an oversensed signal; measuring a maximum baseline-to-peak amplitude in a sense refractory of the rectified smallest intrinsic signal of the worst case scenario; measuring a maximum baseline-to-peak amplitude in a sense refractory of the rectified largest oversensed signal of the worst case scenario; and
at least one of:
adjusting the settings of sensing control parameters of the IMD based on the worst case scenario by programming the IMD to use a second set of sensing control parameters, using the adjusted settings to determine treatment to be delivered, and delivering the determined treatment; orusing the microprocessor of the IMD to display data comprising the current setting of the sensing control parameters of the IMD and a suggested setting of the sensing control parameters of the IMD.