Patent ID: 8761878

Claim:
A non-transitory computer-readable medium having computer-executable instructions to cause a computer or computer-based system to perform a method comprising: generating instructions readable by an implantable cardiac monitor configured to be incapable of producing pacing pulses and to track heart disease progression and detect an indicator indicating a need for a pacing therapy, the instructions upgrading the implantable cardiac monitor to an implantable pacemaker configured to be capable of producing pacing pulses, the implantable cardiac monitor and the implantable pacemaker operating at different times, the instructions including programming a sensing circuit for sensing an intracardiac electrogram, the sensing circuit having a set of cutoff frequencies for filtering the sensed electrogram, the set of cutoff frequencies programmable to either a first set of values or a second set of values different than the first set of values, the first set of values suitable for sensing a far-field electrogram for use by the implantable cardiac monitor, the second set of values suitable for sensing the intracardiac electrogram for use by the implantable pacemaker; and transmitting the instructions to the implantable cardiac monitor via telemetry.