Pacing mode event classification with increased ventricular sensing

[0015]FIG. 1 is a block diagram of an implantable medical device (IMD) 10 having pacing capabilities. While not illustrated, IMD 10 may also include a variety of other monitoring, diagnostic and therapeutic functions. Further, FIG. 1 is not meant to comprehensively illustrate all components of an implantable pacemaker.

[0016]The IMD 10 includes a housing 12 that contains a microprocessor 14, memory 16, a power supply (e.g., battery) 18, a communication module 20 that facilitates telemetry to an external device and a pulse generator 22 for generating pacing pulses. A rate response module 25 is provided to optionally obtain sensory input and control a pacing rate based upon perceived physiological need. A sensor interface 30 is provided to collect data from one or more sensors / electrodes, one or more of which may be disposed on leads 32, 34. The pacing stimuli generated by the pulse generator 22 are delivered via the leads 32, 34. Also illustrated in FIG. 1 is a VPP module 24. It should