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Circulation:TAVR术前后运动量的变化与临床预后的相关性研究

2017-06-08 MedSci MedSci原创

经皮主动脉瓣置换术(TAVR)是治疗主动脉瓣疾病最有效的方案之一。近日,在国际心血管权威杂志《Circulation》上发表了一篇关于探索TAVR术后不同的运动量对预后影响的临床研究。

经皮主动脉瓣置换术(TAVR)是治疗主动脉瓣疾病最有效的方案之一。近日,在国际心血管权威杂志《Circulation》上发表了一篇关于探索TAVR术后不同的运动量对预后影响的临床研究。

本次研究共纳入305TAVR术后的患者(平均年龄79±9岁;男性占44%STS评分:6.7%±4.2%),并在术后6个月对其基线和随访的运动能力进行了评估。运动能力是通过6分钟步行实验(6MWT)来进行评估的。通过高于(n=152,提高组)或低于(n=153,非提高组)基线到术后6个月6分钟行走的距离的中位百分比的变化,研究者将术后的患者分成两组,并对其分别进行临床预后的对比。观察的主要预后结果是术后6个月内出现的临床事件发生率,另外,根据基线的6分钟行走实验的行走距离(高于平均行走距离或者低于平均行走距离)进一步评估分析。

研究结果显示,患者术前和术后(6个月)的平均行走距离分别是204±119263±116米(Δ6MWT= 60 ±106米),其中有219名患者(72%)的行走距离有所提高。与运动量的提高减少有关的因素有基本临床特征(年龄较大、女性、慢性阻塞性肺病;p<0.05)、围手术期的大出血(p=0.009)和术后6个月新发的贫血(p=0.009)。未能提高6MWT距离的20%的患者在全因死亡(p=0.002)、心源性死亡或因心血管疾病再住院率(p=0.001)要更高。6MWT距离有所提高的低基线患者的预后要显著好于没有提高的患者(全因死亡p=0.01心血管终点事件p=0.001)。

TAVR术后有近三分之一患者的运动量耐量没有提高。这些结果表明,系统地实施TAVR术前、后的运动能力评估可能有助于改善患者的风险分层。


原始出处:

Omar.A et al.Predictors and Association with Clinical Outcomes of the Changes in Exercise Capacity Following Transcatheter Aortic Valve Replacement.Circulation.2017 June 6.Doi:https://doi.org/10.1161/CIRCULATIONAHA.116.026349

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