心脏再同步化治疗后出现超反应的预测因子分析

摘要

To analyze the predictors and prognosis for super-response to cardiac resynchronization therapy (CRT) in patients with different etiology. Methods: A total of 181 patients received CRT in our hospital from 2012-01 to 2016-01 were enrolled. The patients were divided into 3 groups: Non-response group, n=63, Response group, n=62 and Super-response group, n=56. The patients were followed-up at 6 months after CRT. Results: There were 30.9% (56/181) patients having super-response. Compared with the other 2 groups, Super-response group had more patients with NYHA II-III and less NYHA IV, the patients were with the smaller LAD, LVESD, LVEDD andless patients had CRT-D implantation. The baseline cardiac function was obviously improved at 6 months after CRT in all 3 groups. The basic LVEDD, LVESD, CRT-D implantation, non-ischemic cardiomyopathy (NICM) and NYHA IV were the independent predictors for super-response occurrence. In addition, compared with ischemic cardiomyopathy (ICM), NICM patients had the higher ratio for super-response occurrence (37.6% vs 7.5%), P<0.001. Survival analysis indicated that NICM patients had the lower risk of all cause mortality (HR=0.31, 95% CI 0.14-0.80), cardiac death (HR=0.27, 95% CI 0.09-0.48) and combined endpoints (HR=0.36, 95% CI 0.27-0.78). Conclusion: At baseline condition, the patients with less degree of left ventricular reconstruction, CRT-D implantation, NICM and NYHA IV had more chance to suffer from super-response after CRT. NICM patients had the better response and prognosis to CRT.%目的:分析不同病因患者接受心脏再同步化治疗(CRT)后超反应的预测因子及预后.方法:纳入2012-01至2016-01期间接受CRT的181例患者,无反应组63例、有反应组62例及超反应组56例,在CRT后第6个月进行随访.结果:CRT超反应发生率为30.9%(56/181).与其他两组比较,超反应组患者纽约心脏协会(NYHA)心功能Ⅱ~Ⅲ级比例更高,Ⅳ级比例更低,左心房内径(LAD)、左心室收缩末期内径(LVESD)、左心室舒张末期内径(LVEDD)更小,植入心脏再同步化除颤仪(CRT-D)患者人数更少.CRT后6个月,三组患者的心功能较基线状态都有明显改善.基线LVEDD、LVESD、CRT-D植入、非缺血性心肌病(NICM)以及NYHA心功能Ⅳ级是CRT超反应的独立预测因素.另外,相较于缺血性心肌病(ICM)患者,NICM患者超反应率高(37.6%vs 7.5%,P<0.001).生存分析提示,NICM患者的全因死亡(HR=0.31,95%CI:0.14~0.80)、心原性死亡(HR=0.27,95%CI:0.09~0.48)、联合终点(HR=0.36,95%CI:0.27~0.78)事件发生风险均低于ICM患者.结论:基线状态下左心重构程度轻、CRT-D植入、NICM以及NYHA心功能Ⅳ级患者CRT植入后更易发生超反应,NICM患者植入CRT后反应性及预后更佳.