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NEJM:CRT-D有益于合并LBBB轻度心衰患者长期生存(MADIT-CRT)

2014-05-07 iang 丁香园

心脏再同步化治疗多通道自动除颤器植入试验(MADIT-CRT)平均随访2.4年结果表明无症状或有轻微症状心衰合并射血分数减少和QRS延长患者植入CRT-D安全有效,与单纯植入ICD相比,植入CRT-D相对减少34%非致命心衰事件或任何原因导致死亡风险。但CRT-D对于无症状或症状轻微心衰患者长期作用尚不明确。 为此,Goldenberg博士等进一步评估了CRT-D对MADIT-CRT研究纳入人群

心脏再同步化治疗多通道自动除颤器植入试验(MADIT-CRT)平均随访2.4年结果表明无症状或有轻微症状心衰合并射血分数减少和QRS延长患者植入CRT-D安全有效,与单纯植入ICD相比,植入CRT-D相对减少34%非致命心衰事件或任何原因导致死亡风险。但CRT-D对于无症状或症状轻微心衰患者长期作用尚不明确。

为此,Goldenberg博士等进一步评估了CRT-D对MADIT-CRT研究纳入人群长期生存(随访7年)的作用。研究表明,针对心衰症状轻微且存在左室功能不全和左束支传导阻滞的患者,早期CRT-D治疗有益于长期生存。研究结果发表在2014年5月的NEJM杂志上。

研究表明,对于存在左束支传导阻滞的心衰患者,CRT-D组和单纯ICD组任何原因导致的累积死亡率分别为18%和29%。另外,左束支传导阻滞心衰患者长期生存获益不受性别、心肌病病因或QRS时长影响。相反,对于不存在左束支传导阻滞心衰患者, CRT-D未带来任何临床获益,甚至增加全因死亡率(任何原因死亡校正风险比为1.57)。

研究得出对于心衰症状轻微且存在左室功能不全和左束支传导阻滞的患者,早期CRT-D治疗有益于长期生存。但同时值得注意的是,非左束支传导阻滞心衰患者不能从CRT-D获益,对于此类患者,CRT-D可能是有害的。

原始出处:


Goldenberg I1, Kutyifa V, Klein HU, Cannom DS, Brown MW, Dan A, Daubert JP, Estes NA 3rd, Foster E, Greenberg H, Kautzner J, Klempfner R, Kuniss M, Merkely B, Pfeffer MA, Quesada A, Viskin S, McNitt S, Polonsky B, Ghanem A, Solomon SD, Wilber D, Zareba W, Moss AJ.Survival with cardiac-resynchronization therapy in mild heart failure.N Engl J Med. 2014 May 1;370(18):1694-701. doi: 10.1056/NEJMoa1401426. Epub 2014 Mar 30.

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