在气球可扩展和自扩展的跨导管大动脉中跨膜压力梯度的时间变化
Surik Sedrakyan1, Mariia Nikolaeva2, Tariq Bhat2
1Department of Internal Medicine, St Elizabeth's Medical Center, Brighton, Massachusetts, USA.
概括
过导管大动脉置换 (TAVR) 在24小时内显示出显著的平均梯度变化. 气球膨胀 (BEV) 与自膨胀 (SEV) 相比,受到门类型和尺寸的影响,而不是负担的影响.
科学领域:
- 心血管医学 心血管医学
- 干预心脏病学 干预心脏病学
- 医疗器械技术 医疗器械技术
背景情况:
- 过导管大动脉置换 (TAVR) 是严重的大动脉狭窄症的关键治疗方法.
- 自扩展 (SEV) 通常显示较低的长期平均梯度 (MG).
- 在TAVR后的梯度变化的时间动态和影响因素尚未完全理解.
研究的目的:
- 为了研究TAVR后平均梯度 (MG) 变化的时间和大小.
- 为了比较不同门类型 (BEV与SEV),大小和大动脉化程度的血液动力学变化.
主要方法:
- 对288名接受TAVR治疗的患者进行了回顾性分析.
- 平均梯度 (MG) 通过心声回声测量在三个时间点:部署后立即,第一天和1-2个月.
- 分析包括门类型,尺寸和分数,使用统计测试和逻辑回归来进行混调整.
主要成果:
- 气球膨胀 (BEV) 与自膨胀 (SEV) 相比,早期和中期平均梯度增加显著更高.
- 较小的门尺寸,特别是23mm BEV,与最显著的梯度升高有关.
- 大动脉负担对早期的平均梯度变化影响很小,对中间梯度变化没有影响.
结论:
- 在TAVR后的血液动力学变化在24小时内开始,BEV比SEV的平均梯度 (MG) 增加得更明显.
- 门类型和尺寸是TAVR后梯度行为的主要决定因素.
- 负担似乎在这些早期的血液动力学变化中起到很小的作用.
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