夜间低氧度参数与冠状动脉微血管功能障碍之间的关联:一个横截面研究
Lanxin Feng1, Xin Zhao1, Jianqiao Song2
1Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, People's Republic of China.
Nature and science of sleep
|January 3, 2025
概括
阻塞性睡眠呼吸暂停 (OSA) 与冠状动脉微血管功能障碍 (CMD) 有关. 夜间低氧症,特别是最低低氧和和氧气含量低于90%的时间,与CMD独立相关,这表明这些参数更好地反映了OSA-CMD联系,而不是呼吸暂停-呼吸暂停指数.
科学领域:
- 心脏病学 心脏病学
- 睡眠医学 睡眠医学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 阻塞性睡眠呼吸暂停 (OSA) 越来越多地被认为具有系统性影响.
- 冠状动脉微血管功能障碍 (CMD) 是一种重要的心血管疾病.
- 连接OSA和CMD的确切机制仍然不完全理解.
研究的目的:
- 调查与OSA相关的夜间低氧度指标与CMD之间的关联.
- 确定特定的低氧度指标是否与CMD的存在和严重程度相关.
主要方法:
- 观察性,单中心研究,涉及接受多睡眠图和冠状动脉血管图的患者.
- 冠状动脉微血管功能障碍 (CMD) 用基于血管的微循环阻力指数 (AccuIMR) 进行评估.
- 进行后勤回归分析,以评估夜间低氧症和CMD之间的关系,并调整混因素.
主要成果:
- 在133名患者中,有72人 (54.14%) 患有CMD.
- 患有CMD的患者表现出更高的OSA患病率和更严重的夜间缺氧.
- 最低氧和度 (minSpO2) ≤90%和氧和度<90% (T90) ≥5%的时间百分比独立地与CMD相关 (分别P=0.004和P=0.041).
- 在呼吸暂停-呼吸暂停指数 (AHI) 和CMD之间没有发现显著的关联.
结论:
- 夜间低氧度参数与冠状动脉微血管功能障碍 (CMD) 有意义地相关.
- 特定的低氧度指标,如minSpO2和T90,可能是OSA-CMD关系的更敏感指标,而不是单独的AHI.
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