Patent ID: 7346393

Claim:
A cardiac rhythm management system comprising: a cardiac resynchronization therapy module for providing cardiac resynchronization therapy; a pacemaker module for providing bradycardia therapy; sensing circuitry to collect electrophysiological data indicating the presence or absence of a ventricular conduction delay; a selector module coupled to the cardiac resynchronization therapy module and the pacemaker module, wherein the selector module is configured to select an operating mode from among a plurality of operating modes including the cardiac resynchronization therapy module and the pacemaker module; wherein the pacemaker module reverts to an asynchronous pacing mode if atrial sensing is lost; wherein the cardiac resynchronization module reverts to an inhibited mode in which no pacing pulses are delivered if atrial sensing is lost; and, wherein the selector module is configured to automatically select between the cardiac resynchronization therapy module and the pacemaker module based upon the collected electrophysiological data indicating the presence or absence of a ventricular conduction delay.