Double atrium - three chamber cardiac pacemaker having fall back - mode

摘要

A double atrial triple chamber pacemaker comprises an atrial probe the right and left atrial probe connected to a single detection circuit / atrial stimulation of the pacemaker, as well as a ventricular probe connected to a detection circuit / ventricular stimulation of the pacemaker. The pacemaker comprises moreover a desynchronization of the ventricular stimulation when the atrial rhythm is too rapid and of progressive re-synchronization in the case of a return of the atrial rhythm at a rate less rapid. & br / the process of the invention is characterized by the steps consisting in: receive as input of the atrial circuit, a succession of signals, at each detection of a signal, the masking of a propagation delay interatrial; measuring the time interval thus masked between two successive signals; compare this time interval concealed to a predetermined reference value; and trigger the method of progressive re-synchronization when the time interval masked thus measured again becomes greater than the setpoint value.