NEJM:二尖瓣置换治疗 vs 二尖瓣修复2年的结果比较

2015-11-10 崔倩 译 MedSci原创

硝酸盐是常用的处方,以提高保守射血分数心力衰竭患者患者活动耐受性。研究人员比较了单硝酸异山梨酯或安慰剂对此类患者日常活动中的效果。

在一项比较重度缺血性二尖瓣关闭不全患者二尖瓣置换治疗与二尖瓣修复的随机试验中,研究人员发现,在术后1年时左室收缩末期容积指数(LVESVI)、生存、不良事件差异不显著。然而,修复组的患者有显著较多的中度或重度二尖瓣关闭不全复发现象。研究人员现在报告这项试验的2年结果。

研究人员随机分配251患者接受二尖瓣修复或置换。随访患者2年,对临床和超声心动图的结果进行了评估。

在幸存的患者中,二尖瓣修复术后患者的平均(±SD)2年的LVESVI为52.6±27.7毫升每平方米体表面积,二尖瓣置换患者为每平方米60.6±39.0毫升(基线的平均变化,分别为-9.0毫升每平方米和-6.5毫升每平方米)。修复组的两年死亡率为19.0%,,置换组为23.2%(修复组危险比,0.79;95%置信区间,0.46至1.35;P=0.39)。在2年时基于秩次LVESVI的评估(包括死亡)显示没有显著的组间差异(Z值=-1.32,P=0.19)。修复组在2年时中度或重度二尖瓣关闭不全的复发率显著高于置换组(58.8% vs 3.8%,P<0.001)。严重的不良事件和总体再入院率无显著组间差异,但修复组的患者有更多的与心脏衰竭(P= 0.05)和心血管再住院(p = 0.01)相关的更严重的不良事件。在明尼苏达心衰生活质量问卷表,置换组(P = 0.07)改善的趋势更大。

在接受二尖瓣修复或更换的严重缺血性二尖瓣关闭不全的患者中,研究人员在2年内观察到的左心室逆转重塑或生存,没有显著的组间差异。二尖瓣关闭不全在修复小组复发更频繁,从而导致更多的心脏故障相关的不良事件,和心血管疾病的发生。

原始出处:

Daniel Goldstein,Alan J. Moskowitz,Annetine C. Gelijns,et al.Two-Year Outcomes of Surgical Treatment of Severe Ischemic Mitral Regurgitation,NEJM,2015.11.9

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    2016-04-24 yxch48
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    2015-11-11 wwzzly