An active implantable medical device, in particular a cardiac pacemaker defibrillator and / or cardiovertor type a reduction of episodes of arrhythmia, atrial arrhythmia

摘要

This device comprises: means of detection of events of spontaneous electrical activity in a heart cavity, in particular the atrium, the means for delivering a stimulation to the heart cavity, controlled by an interval of the current so that, at each cardiac cycle, a stimulation is delivered to the cavity if no spontaneous event is detected at the end of a time corresponding to the flow of the period of escape interval since the last spontaneous event or the last stimulation in the cavity; means for counting the number of events stimulated successive; and means for discriminating between the original extrasystole origin, or not of events detected in the cavity spontaneous. According to the invention, the escape interval can be modified at each cardiac cycle so as to reduce to a first programmable value the actual escape interval after detection of a spontaneous event of a non extrasystole origin, or lead to a second programmable value the actual escape interval after delivery of a predetermined number of successive stimulations.