Circulation:Melody瓣膜的长期临床和血流动力学结果良好

2015-06-07 崔倩 MedSci原创

背景:采用 Melody 瓣膜的经导管肺动脉瓣膜置换术(TPA)的研究已显示出良好的短期疗效,但目前没有研究公布过长期随访的数据。    方法和结果:这是一个来自美国的前瞻性的器械豁免试验,该试验纳入右室流出道梗阻或反流的儿童和成人患者共171名(平均年龄:19岁)。根据一个标准化的协议对148例接受TPV并出院的患者每年随访。在平均随访4.5年间(范围,0.4–7年

背景:采用 Melody 瓣膜的经导管肺动脉瓣膜置换术(TPA)的研究已显示出良好的短期疗效,但目前没有研究公布过长期随访的数据。
    
方法和结果:这是一个来自美国的前瞻性的器械豁免试验,该试验纳入右室流出道梗阻或反流的儿童和成人患者共171名(平均年龄:19岁)。根据一个标准化的协议对148例接受TPV并出院的患者每年随访。在平均随访4.5年间(范围,0.4–7年),32例患者再次手术,其中因右室流出道再梗阻(n=27,22例支架断裂),因感染性心内膜炎(n=3,2例狭窄和1例肺动脉瓣反流)和右心室功能障碍(n=2)。其中11例患者的TPV移植是首次或第二次的干预。五年免于干预和移植分别为76±4%和92±3%。一根管道的存在、更低的排放右室流出道压力阶差均都与更长时间的免于再次干预有关。在113例活着的并免于再次干预的患者,随访的梯度(中位数,植入后4.5年)从早期后TPV更换后就没有变化,但仅有1例患者有轻度或更小幅度的肺动脉返流。几乎所有的患者在纽约心脏病协会分级为I或II级。多基线测定肺功能严重受损与TPV置换后运动功能改善的更低可能性相关。 
    
结论:使用Melody瓣膜的TPV置换提供术后有长达7年的良好血流动力学和临床结果。主要的瓣膜的损坏是罕见的。TPV功能障碍的主要原因是支架断裂相关的狭窄,一旦被更广泛采用、这将会不再少见。

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