A clinical study of pacing in riht ventricular outflow tract
10.3760/cma.j.issn.1008-6706.2015.05.033
- VernacularTitle:右室流出道间隔部起搏的临床观察
- Author:
Ling CHENG
;
Zhicheng HUO
- Publication Type:Journal Article
- Keywords:
Cardiac Pacing,Artificial;
Stroke Volume
- From:
Chinese Journal of Primary Medicine and Pharmacy
2015;(5):737-739
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the effects on cardiac function between pacings of right outflow tract ( RV-OT) and right vcntricular apex ( RVA) .Methods According to the digital table ,30 patients with high degree atrio-ventricular block which need for permanent pacemaker were randomly divided into the group RVA and group RVOT , 15 cases in each group ,and the DDD or VVI pacemaker was implanted .The programmable pacemakers was carried out,3,12 months after the operation.By Doppler ultrasound,the left and right ventricular synchronization time ,end diastolic diameter ( LVDd) ,left ventricular ejection fraction ( EF) was checked ,ECG QRS wave width ( QRSd) ,6 mi-nutes walking distance (6MWT) was examined.Results Followed up for 12 months,there was no shift,electrode dislocation and other complications .The left and right ventricular synchronization time of group RVOT [(59 ±10)ms] was significantly better that that in the RVA group [(80 ±11)ms](P<0.05).Following up,the EF[(60 ±4)%], LVDd[(45 ±6)mm],6MWT[440 ±10)m]in RVOT group after operation were better than [(48 ±5)%,(54 ±7) mm,(380 ±13)m](all P<0.05),the QRSd of RVOT group[(134 ±9)ms]was significantly shortened than that of group RVA[(186 ±20)ms](P<0.05).Conclusion RVOT septum pacing can be more effective in cardiac func-tion than RVA pacing .
