Method and system to manage adaptive sensing

An implantable medical device (IMD), comprising:

• electrodes configured to obtaining cardiac activity (CA) signals for cardiac beats;
• sensing circuitry configured to compare the CA signals to a sensitivity level to detect sensed events, the sensed events including a collection of prior sensed events and a candidate sensed event;
• memory to store specific executable instructions;
• and
• one or more processors configured to execute the specific executable instructions for:
• changing the sensitivity level, utilized by the sensing circuitry, over the cardiac beats based on an adaptive sensitivity profile, the adaptive sensitivity profile having a maximum sensitivity limit (MSL);
• determining whether at least one characteristic of interest (COI) from the candidate sensed event satisfies at least one criterion relative to the corresponding at least one COI for the collection of prior sensed events;
• declaring the candidate sensed event to be a valid candidate sensed event or a false candidate sensed event based on the determining operation;
• and
• adjusting the MSL based on when the COI from the candidate sensed event satisfies the at least one criterion to provide adaptive sensing of CA signals.