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通过血管学导向的微循环阻力评估的胸痛高压心肌病的微循环功能障碍
Yahui Lu1,2, Zheng-Kai Xue1,2, Wenqing Gao1,2
1Department of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China.
Scientific reports
|July 23, 2024
概括
过度缩性心肌病 (HCM) 中的胸痛与微血管功能障碍有关. 血管造影衍生微循环阻力 (AMR) 在HCM患者中显示出更高的耐药性,预测了不良结果.
科学领域:
- 心脏病学 心脏病学
- 心血管生理学心血管生理学
背景情况:
- 胸痛是超性心肌病 (HCM) 的常见症状,通常与心肌缺血无显著的冠状动脉狭窄有关.
- 微血管功能障碍越来越多地被认为是HCM中缺血的一个贡献者.
研究的目的:
- 用血管学衍生微循环阻力 (AMR) 来研究HCM患者的微血管功能障碍.
- 评估AMR和HCM患者的临床结果之间的相关性.
主要方法:
- 对有胸痛的HCM患者和对照患者的回顾性分析.
- 使用血管学计算AMR,一个无线和无腺素的指数.
- 倾向性得分匹配以平衡人口统计特征.
- 与心声回声和随访数据的相关性分析.
主要成果:
- 在匹配后,76名HCM患者和152名对照患者之间在心上冠状动脉狭窄方面没有显著差异.
- 在HCM患者的三条心上冠状动脉中显著增加AMR.
- 65.7%的HCM患者符合冠状动脉微血管功能障碍 (CMD) 的标准 (AMR ≥250 mmHg*s/m).
- 左心室壁厚度增加是CMD的一个独立风险因素 (OR=1.209).
- 在左前下垂动脉中较高的AMR (AMR_LAD ≥250 mmHg*s/m) 预测了不良终点的累积风险增加 (逻辑等级p=0.023) 并是一个独立的风险因素 (HR=11.64).
结论:
- 血管造影衍生微循环阻力 (AMR) 是评估HCM中微血管功能障碍的宝贵工具.
- 冠状动脉微血管功能障碍在患有胸痛的HCM患者中很普遍.
- 抗菌耐药性提供了重要的预后见解,较高的值表明不良临床结果的风险增加.
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