冠状动脉微血管功能障碍的发生率和重要性
Charlotte Nordberg Backelin1,2, Sara Svedlund2, Entela Bollano3,2
1Cardiology Department, Sahlgrenska University Hospital, Gothenburg, Sweden charlotte.backelin@vgregion.se.
Open heart
|September 5, 2025
概括
冠状动脉微血管功能障碍 (CMD) 影响了三分之二的心力衰竭患者,其排气分数减少 (HFrEF) 或轻微减少的排气分数 (HFmrEF). 心力衰竭严重性的标志物,如减少的全球纵向应变 (GLS),与CMD有关.
科学领域:
- 心脏病学
- 心血管研究
- 心脏衰竭的研究
背景情况:
- 冠状动脉微血管功能障碍 (CMD) 在心力衰竭中越来越多地被发现.
- 需要进一步调查其患病率和心力衰竭的严重程度 (HFrEF/ HFmrEF).
研究的目的:
- 在HFrEF/HFmrEF患者中确定CMD的患病率.
- 评估CMD与心力衰竭严重程度指标之间的关联.
主要方法:
- 测量冠状动脉流量储备 (CFR) 的方法是心声学,包括基于腺的胸腔多普勒测试.
- 被诊断为CMD的CFR为<2. 5
- 多变量回归分析探讨了CFR,CMD和临床/生物标志物数据之间的关联.
主要成果:
- 在66%符合条件的HFrEF/ HFmrEF患者中发现了CMD.
- 患有CMD的患者呈现较高的NT-proBNP和hsTroponin-T,以及较低的堪萨斯城心肌病问卷 (KCCQ) 得分.
- 左心室和右心室和左心室的全球纵向应变 (GLS) 减少与较低的CFR和CMD存在有关.
结论:
- 在HFrEF/ HFmrEF患者中,CMD的流行率很高.
- 心力衰竭的严重性标志物,包括GLS和生物标志物 (NT-proBNP,hsTroponin-T) 独立地与CMD相关.
- 这些发现强调了微血管功能在心力衰竭管理中的重要性.
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