心脏再同步治疗起搏器与心脏再同步治疗除颤器对心力衰竭患者预后影响的荟萃分析

目的 比较心脏再同步治疗起搏器(cardiac resynchronization therapy,CRT)与心脏再同步治疗除颤器(cardiac resynchronization therapy -defibrillator,CRT-D)对心力衰竭患者预后的影响.方法 通过计算机和手工检索MEDLINE、Cochrane临床试验中心登记库、EMBASE和中国万方、中国知网(CNKI)数据库,收集1990年1月1日至2011年9月30日CRT与CRT-D对心力衰竭患者生存疗效影响的随机对照研究、前瞻观察性研究和病例对照研究.按纳入标准与排除标准选择文献,提取资料,采用RevMan 5.0软件对患者全因病死率、心脏猝死率和心衰病死率数据进行荟萃分析.结果 共纳入7项研究3404例患者,结果提示CRT-D组全因病死率低于CRT组(OR =0.61,95％ CI:0.47～0.79,P=0.01),亚组分析显示随访时间≤1年差异无统计学意义(OR =0.76,95％ CI:0.54 ～ 1.06,P=0.11),随访时间＞1年差异有统计学意义(OR=0.56,95％ CI:0.41～0.77,P=0.0004).CRT-D组心源性猝死(OR=0.20,95％ CI:0.07～0.59,P=0.003)和心衰病死(OR =0.72,95％ CI:0.54～0.96,P=0.02)也分别低于CRT组.结论 CRT-D对心力衰竭患者的预后可能优于CRT.

Effects of cardiac resynchronization therapy with pacemaker and cardiac resynchronization therapy with defibrillator on the outcomes of patients with heart failure: a meta - analysis

Objective To evaluate the effects of cardiac resynchronization therapy with pacemaker (CRT- P) and cardiac resynchronization therapy with defibrillator (CRT -D) on the outcomes of patients with heart failure.Methods MEDLINE,Cochrane Controlled Trials Register,EMBASE and Chinese Wan Fang,CNKI database were searched to collect data from randomized controlled trials and cohort trials of CRT - P versus CRT - D for the treatment of heart failure from January 1,1990 through September 30,2011.Meta - analysis of data including all causes leading to mortality and mortality of sudden cardiac arrest and heart failure was carried out by using the RevMan 5.0 package.Results A total of 3 404 patients were collected from seven studies.Pooled analysis demonstrated CRT - D significantly reduced mortalities of all causes in comparison with CRT - P [ odds ratio (OR) =0.61,95％ confidence interval (CI) =0.47 ～0.79,P =0.0001 ].Sub - group analysis showed that an increased benefit was seen after extended follow -up period ( after 1 year,OR =0.56,95 ％ CI =0.41 ～ 0.77,P =0.0004),but not after relatively short follow - up period ( within one year,OR =0.76,95 ％ CI =0.54 ～ 1.06,P =0.11 ).Mortalities of sudden cardiac arrest ( OR =0.20,95％ CI =0.07 ～ 0.59,P =0.003) and heart failure ( OR =0.72,95％ CI =0.54 ～ 0.96,P =0.02) of patients treated with CRT - D were lower than those of patients treated with CRT- P.Conclusions This study suggests that CRT - D is superior over CRT - P in respect of better outcome of patients with heart failure.