Circulation:MitraClip®用于功能性二尖瓣返流的一年预后

2018-09-20 xiangting MedSci原创

在继发性MR患者中使用MitraClip进行经导管MV修复与可接受的安全性、MR严重程度的降低、症状改善和积极的心室重构相关。

继发性二尖瓣返流(SMR)发生在没有器质性二尖瓣(MV)病变的情况下,并可发展为左心室(LV)扩张或重塑,或由于小叶束缚伴对合受损,最常见于瓣下装置的心尖和侧向离断,伴晚期环形扩张。SMR的最佳治疗方法尚不清楚。这项研究旨在评估EVEREST II(血管内瓣膜缘-缘修复研究)研究装置豁免(IDE)项目中接受MitraClip手术所有SMR患者的1年判定预后,该项目包括随机临床试验、前瞻性高危登记和REALISM后续注册研究。

入选EVEREST II的3+/4+ SMR患者根据非高危(非HR)和高危(HR)状态进行分层(高危定义为胸外科医师协会(STS)死亡风险≥12%或预定义的危险因素)。评估1年时的临床、超声心动图和功能性结局。

总共有616名SMR患者接受了MitraClip手术(482 名HR、134名非HR;平均年龄:73.3±10.5岁;STS:10.2±6.9%)。基线时,80.5%患者的纽约心脏病协会(NYHA)分级为III/IV级。30天的主要不良事件包括死亡(3.6%)、卒中(2.3%)和肾衰竭(1.5%)。出院时,88.8%的患者MR≤2+。1年时,139名患者死亡,Kaplan-Meier估算的无死亡率为76.8%。大部分幸存患者(84.7%)的MR仍然≤2+、NYHA仍为I/II级(83.0%)。HR患者1年时Kaplan-Meier生存率为74.1%,非HR患者为86.4%(p=0.0175)。1年时,两组的MR降低(MR≤2+:84.0%vs.87.0%)和LV舒张末期容积改善相当(-8.0ml vs. -12.7ml),而NYHA I/II级分别占HR和非HR患者的80.1%和91.8%(p=0.008)。在HR患者中,心衰的年化住院率从术前12个月的0.68降至术后12个月的0.46(p<0.0001)。

在继发性MR患者中使用MitraClip进行经导管MV修复与可接受的安全性、MR严重程度的降低、症状改善和积极的心室重构相关。

原始出处:
Gorav Ailawadi,et al. One Year Outcomes Following MitraClip? for Functional Mitral Regurgitation. Circulation. 19 September 2018.

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    2019-04-19 bsmagic9140
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    2019-03-01 gracezdd
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    2018-09-22 wwzzly

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