Pacemaker mode switching based upon atrial conduction time

摘要

A cardiac pacemaker is configured to estimate the intrinsic atrial conduction time from sensed signals detected by an atrial sensing channel. Atrial conduction delays have been found to be associated with the onset of atrial tachyarrhythmias. Upon detection of an atrial conduction time above a specified limit value, the pacemaker is programmed to switch from a normal pacing mode to an atrial pacing preference mode.