Objective To systematically evaluate the clinical effectiveness of right ventricular outflow tract (RVOT) pacing for heart disease.
Methods We searched the electronic bibliographic databases, including The Cochrane Library, PubMed, EMbase, CBM, VIP, CNKI, and WANFANG database to assemble the randomized controlled trials (RCTs) of RVS Pacing compared with right ventricular apical (RVA) pacing for heart disease. The deadline of the retrieval time was January 2010. Data were extracted and evaluated by two reviewers independently with a designed extraction form. The RevMan 5.0 software was used for meta-analysis.
Results A total of 16 RCTs involving 926 patients were included. The results of meta-analyses showed that right ventricular outflow tract (RVOT) pacing significantly increased the left ventricular ejection fraction of 3 months and 18 months (WMD= 3.53, 95%CI 1.02 to 6.04; WMD= 8.94, 95%CI 7.35 to 10.52).Compared with RVA pacing, RVOT pacing could significantly reduce the QRS wave duration (WMD= –22.42, 95%CI –31.05 to – 13.80) immediately after the operation.
Conclusion RVOT pacing can give patients a good physiological state which is more consistent with biventricular electric conduction and lead to the hemodynamic improvement in the short term, but the long-term result is not confident.
Citation: ZHANG Yulong,PAN Hui,MA Bin,GUO Jiwu,LI Jiang,YANG Kehu. Right Ventricular Outflow Tract Pacing for Heart Function: A Meta-analysis. Chinese Journal of Evidence-Based Medicine, 2010, 10(4): 476-482. doi: 10.7507/1672-2531.20100431 Copy