Therapy: Acute Effects of DDD Pacing Compared to VDD Pacing Right Atrial Pacing Impairs Cardiac Function During Resynchronization

Our findings suggest that avoidance of right atrial pacing results in a higher degree of LV resynchronization, in a substantial prolongation of the LV filling period, and in an improved myocardial performance. Thus, the VDD mode seems to be superior to the DDD mode in CRT patients.