Patent ID: 8391978

Claim:
A method of adjusting an electrogram (EGM) sensitivity level in an implantable medical device, comprising: using the device to monitor an EGM to detect electrical events at a sensitivity level; using the device to monitor intracardiac pressure to detect pressure waves; and using the device to analyze the detected electrical events and pressure waves to determine the presence or absence of a one-to-one correlation between detected electrical events and pressure waves, the absence of the one-to-one correlation indicating the need to adjust the sensitivity level, wherein the analyzing of the electrical events and pressure waves to identify the presence or absence of the one-to-one correlation comprises: before each detected pressure wave, determining whether there is an associated electrical event within a second time window, and wherein the one-to-one relationship is deemed present when the number of pressure waves without associated electrical events within the second time window measured over a predetermined number of pressure waves is less than a predetermined limit; and adjusting the sensitivity level in the absence of the one-to-one correlation.