Retrospective analysis of right ventricular pacing in different parts
AIM: To observe the effects of right ventricular pacing in different parts on left ventricular remodeling and cardiac function. METHODS: All of patients, implanted by dual-chamber pacemakers, were divided into 2 groups: RVA pacing group and RVS pacing group, according to the implanted right ventricular electrode position in the different parts. Patients were evaluated and compared for left ventricular ejection fraction, cardiac output, septal thickness, time to peak contraction in different parts and serum BNP level at 18 months follow-up period. RESULTS: At 18 months, there was no significant difference in left ventricular ejection fraction and cardiac output respectively, in comparison of RVOT and RVA implants ( respectively P > 0.05). However, the septal thickness shorted (P<0. 05 ) and the serum BNP level clearly decreased in the RVS group (respectively P < 0. 05). CONCLUSION: Long-term apical pacing could cause ventricular remodeling and elevation of the serum BNP level. However, the cardiac function decline has not yet found in the process of observation.
right ventricularcardiac pacing, artificialcardiac funtionBNP
NETL
NSTL
万方数据
维普
