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Yuki Izumi1,2, Yukichi Tokita1, Hiroshi Honma1
1Department of Cardiovascular Medicine, Nippon Medical School.
概括
耳前功能性 mitrale 吐 (MR) 与左心房 (LA) 的扩大和耳前环 (MA) 的重塑有关. 具体来说,MA的前后直径增加是这些患者MR的关键机制.
科学领域:
- 心脏病学 心脏病学
- 心脏成像 - - 心脏成像
- 结构性心脏病 结构性心脏病
背景情况:
- 耳前功能性心肌反 (MR) 的特点是左耳前 (LA) 扩张和心心环 (MA) 改造.
- 在LA扩张和MA重塑之间确切的关系,以及MR的潜在机制,仍然不完全理解.
研究的目的:
- 在心房动 (AF) 患者中研究LA扩张和MA重塑之间的关系.
- 在这个患者队列中阐明与MA重塑相关的MR机制.
主要方法:
- 一项追溯性研究,对97名连续的AF患者进行了三维透食管心声学.
- 18名中度/重度MR患者和79名轻度/轻度MR患者之间的心声图数据比较.
主要成果:
- 与非MR组相比,MR组表现出更大的LA体积指数和更低的帐高度.
- 额头环 (MA) 的尺寸,包括前后 (AP) 的直径和环面积,在MR组显著更大.
- AP直径与LA体积指数有适度的相关性,并且独立地与显著的MR相关,而不是环面积.
结论:
- 左心房 (LA) 扩张与 mitra annulus (MA) 改造相关,主要是通过增加AP直径.
- 在MA重塑的背景下,MA的循环变化,以AP直径扩大为特征,似乎是导致MR的关键机制.
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