肺部对一氧化碳的扩散能力与系统性硬化症中亚临床心肌功能障碍相关:心脏MR研究
Huilin He1, Xinyu Tong2, Zihan Ning2
1Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Beijing, China.
RMD open
|December 13, 2023
概括
系统性硬化症患者的肺功能减弱,特别是对一氧化碳 (DLCO) 的扩散能力,表现出更高的心肌T1值. 这表明DLCO可能表明SSc.中的亚临床心脏问题.
科学领域:
- 心脏病学 心脏病学
- 肺部病理学 肺部病理学
- 放射学 放射学是一门学科.
背景情况:
- 系统性硬化症 (SSc) 涉及皮肤,肺和心脏的微血管和纤维性损伤.
- 心脏参与是SSc的重要并发症,即使在无症状患者中也是如此.
研究的目的:
- 研究没有心血管症状的SSc患者的肺功能和心肌T1值之间的关系.
- 探索心磁共振成像 (CMR) 作为评估SSc.亚临床心肌变化的工具.
主要方法:
- 对45名SSc患者和23名健康对照进行心脏MRI (CMR) 影像检查.
- 测量了心肌原生T1值和心脏功能.
- 评估了肺功能,包括对一氧化碳 (DLCO) 的扩散能力. 使用斯皮尔曼相关性和线性回归分析了相关性.
主要成果:
- 与健康人群相比,SSc患者的心肌原生T1值显著更高 (1305.9±49.8毫秒对1272.6±37.6毫秒).
- 在SSc患者中,DLCO降低与心肌原生T1值增加显著相关,即使在调整混因素后也是如此.
- 中度至重度的DLCO减少与心肌原生T1值升高有很强的相关性.
结论:
- 在SSc患者中,DLCO和心肌原生T1值之间存在显著的反相关性.
- 降低DLCO可能是系统性硬化症中亚临床心肌功能障碍的潜在指标.
- 从CMR衍生出的T1映射可以揭示SSc的早期心脏变化.
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