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JACC:生物瓣置换术后的瓣膜结构变化

2020-05-18 MedSci原创 MedSci原创

生物瓣置换术后常常出现亚临床小叶血栓形成,用四维计算机断层成像显示小叶增厚(HALT)和小叶运动减弱(RLM)。本研究的目的是确定主动脉生物假体置换术后HALT和RLM的频率、预测因子、血流动力学和临

生物瓣置换术后常常出现亚临床小叶血栓形成,用四维计算机断层成像显示小叶增厚(HALT)和小叶运动减弱(RLM)。本研究的目的是确定主动脉生物假体置换术后HALT和RLM的频率、预测因子、血流动力学和临床相关性。

本研究纳入分析了Evolut临床研究中的没有接受口服抗凝治疗的经导管主动脉瓣置换术(TAVR)和外科主动脉瓣置换术患者。术后30天,HALT在TAVR组的发生率为17.3%,在外科组中为16.5%,RLM的发生率分别为14.6%和14.3%。术后1年,HALT在TAVR组和外科组患者的发生率分别为30.9%和28.4%,RLM的发生率分别为31%和27%。主动脉瓣血流动力学状态在两个时间点均不受HALT或RLM的存在或严重程度的影响。

研究结果显示,自扩式经导管主动脉瓣置换术后1年内,主动脉生物瓣的ct影像表现常有异常,但呈动态变化,但这些发现与低手术风险患者主动脉瓣置换术后的主动脉瓣血流动力学状态无关。

原始出处:

Philipp B et al.Bioprosthetic Aortic Valve Leaflet Thickening in the Evolut Low Risk Sub-Study.2020 May.

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    2021-04-20 yxch48
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    2020-06-25 hbwxf
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