The Effect Of Different Right Ventricular Pacing Site On Clinical Prognosis

Objective To evaluate the influences of right ventricular mid-septal pacing(RVMSP),right ventricular apical pacing(RVAP) and the other pacing site after a long term follow up.Methods According to X ray, echocardiograms and electrocardiogram, we divide the patients into RVMSP,RVAP and the other pacing site three groups.Retrospectively analysis the all-cause mortality, new-onset heart failure, new-onset atrial fibrillation and cardiogenic hospitalization after follow-up.Results A total of 364 patients(RVMSP=147,RVAP=105, the other pacing site=112) with 57.2±10.1 months follow-up, new-onset heart failure in RVMSP and the other pacing site were superior to RVAP(17.8%vs. 17.0%vs. 29.5%,p < 0.05). The mortality were no significant differences in three groups(p=0.420), but compared to RVAP, RVMSP has lower mortality(8.6%vs. 4.8%). New-onset atrial fibrillation(p=0.973)and cardiogenic hospitalization(p=0.286) were no significant differences in three groups. Pacing QRS duration and RVAP were the predictive factors of new-onset heart failure.Conclusion Comparing with RVAP, RVMSP and the other pacing site could reduce the new-onset heart failure.