无支架与支架门对大动脉狭窄的随机比较:对左心室质量的影响
Diego Perez de Arenaza1, Belinda Lees, Marcus Flather
1Royal Brompton and Harefield NHS Trust, London, UK.
Circulation
|October 19, 2005
概括
无支架的猪显示出更好的流动动力学,但与有支架的门相比,与大动脉狭窄患者相比,左心室质量减少相似. 这两种门类型都有效地减少了主动脉替换后的左心室质量.
科学领域:
- 心血管外科心血管外科
- 生物材料科学 生物材料科学
- 医疗器械 医疗器械
背景情况:
- 大动脉置换 (AVR) 是严重的大动脉狭窄症的标准.
- 无支架的猪提供了一个低阻力替代传统支架的替代品.
- 随机试验对于比较假体门的疗效至关重要.
研究的目的:
- 为了比较没有支架的猪门与有支架的猪门在患有严重大动脉狭窄的成年人中的疗效.
- 评估门类型对AVR后左心室质量指数 (LVMI) 的影响.
- 为了评估无支架和支架门之间的血液动力学差异.
主要方法:
- 一个随机试验,比较无支架和支架的猪上门.
- 主要结局:左心室质量指数 (LVMI) 的变化,通过心声学和心血管MR测量.
- 二次结果:峰值大动脉速度和索引有效孔径面积.
主要成果:
- 在6个月或12个月后,无支架门和支架门之间的LVMI减少没有显著差异.
- 从基线到6个月,两组内LVMI的显著降低.
- 无支架门在峰值大动脉速度方面表现出更大的降低,并增加了索引有效孔面积.
结论:
- 没有支架的门和有支架的门都能在左心室质量上实现类似的减少.
- 无支栓提供卓越的血液动力性能 (峰值流速,孔区域).
- 这两种门类型的临床结果是可比的.
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