Patent ID: 7890168

Claim:
An active implantable medical device of a cardiac pacemaker, defibrillator and/or cardioverter comprising: means for detecting spontaneous atrial and ventricular events including atrio-ventricular conduction; means for mode commutation conditionally commutating between an AAI mode with ventricular sensing and a DDD mode; means for automatic detection of implantation; means for mode adaptation activated over a period of adaptation after detecting implantation by said means for automatic detection of implantation, said means for mode adaptation temporarily operating the device in said AAI mode and sensing a ventricular activity signal over the period of adaptation; and means for analyzing the ventricular activity signal sensed over the period of adaptation to detect a conduction disorder over the period of adaptation, wherein the means for mode adaptation determines pacing mode of the device after the period of adaptation by, in a presence of the conduction disorder, setting the device in the DDD mode and inhibiting the means for mode commutation, and in an absence of the conduction disorder, setting the device in the AAI mode with ventricular sensing and activating the means for mode commutation.