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在X和顶帽机械大动脉假肢的血液动力学比较

Fernando M Juarez-Casso¹, Busra Cangut¹, Katherine S King²

¹Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota.

The Annals of thoracic surgery

|April 18, 2024

概括

这项研究发现On-X和Top Hat机械大动脉之间血液动力学功能没有显著差异. 这两种门类型都显示出稳定的大动脉膜面积指数,这表明长期表现相似.

科学领域:

心血管外科心血管外科
生物医学工程生物医学工程
医疗器械技术医疗器械技术

背景情况:

在机械大动脉假肢中,血液动力学功能存在有限的比较数据.
这项研究解决了对两种常用的机械大动脉门进行比较的需求:On-X和Top Hat.

研究的目的:

为了比较On-X和Top Hat机械大动脉门的血液动力学性能.
评估这些假肢中血液动力学功能的长期稳定性.

主要方法:

在2011年至2019年间,对512名接受大动脉置换手术的患者进行了回顾性分析.
匹配了320名患者 (每组160名) 的队列,接受了On-X或Top Hat机械门.
在手术前,出院和随访期间 (中位数为1.39年) 收集的心声图数据.

主要成果:

尽管与外流管径相匹配,但顶帽更频繁地植入较小的环形尺寸 (≤21毫米).
在X上门在手术期间有更长的大动脉十字时间.
在两种门类型之间,在放电时或长期随访期间,大动脉膜面积指数没有显著差异.

结论:

通过大动脉面积指数评估的血液动力学功能,在On-X和Top Hat机械大动脉之间是可比的.
这两种门假肢在观察后续期间都表现出稳定的血液动力学性能.
对On-X门的更长的交叉时间可能表明更大的植入复杂性.

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