DDI Mode: a New Stimulation Mode in the Therapy of Pacesetting Disorders

Summary

The indication for the large group of patients with an isolated pacesetting disorder, such as sick sinus syndrome, to implant a pacemaker device is the necessity to restore a sufficient basic rate. Because AV conduction is maintained P-wave controlled ventricular stimulation is of secondary importance. On the other hand pacemaker-mediated tachycardias by intermediate atrial fibrillation or supraventricular tachycardias are likely to occur in patients with sick sinus syndrome.

The DDI mode protects against this complication, retaining dual chamber detection and stimulation. The fact that P-wave controlled ventricular stimulation is not possible during physical activity is not a disadvantage. Therefore the DDI mode should be considered as a new physiological stimulation mode for patients with an isolated pacesetting disorder.