肺功能解释中的z-score不确定性区域:从CO和NO肺扩散能力的概念验证研究
Giovanni Barisione1, Sanja Stanojevic2, Vito Brusasco3
1Struttura Semplice Fisiopatologia Respiratoria, Clinica Malattie Respiratorie e Allergologia, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genova, Italy.
Respiratory medicine
|December 20, 2025
概括
间歇性肺纤维化 (IPF) 和肺气 (PE) 的肺扩散能力 (DL) 值不同于正常水平的标准下限. 对于一氧化碳 (DLCO) 和一氧化 (DLNO) 的DL显示出这些肺部疾病的诊断准确性各不相同.
科学领域:
- 肺部医学 肺部医学
- 呼吸系统生理学 呼吸系统生理学
- 诊断成像 诊断成像 诊断成像
背景情况:
- 低肺扩散能力 (DL) 的标准化解释存在,但反应性气体,参考方程和结构异常对正常的下限 (LLN) 的影响尚不清楚.
- 间歇性肺纤维化 (IPF) 和肺气 (PE) 是影响DL的重要肺部疾病.
研究的目的:
- 评估计算机断层扫描 (CT) 定义的IPF和PE的LLN (z-scores) 解释的不确定性区域.
- 为了比较DLL对一氧化碳 (DLCO) 和DLL对一氧化 (DLNO) 的诊断性能,将这些条件与对照区分开来.
主要方法:
- 在120名成年人 (66名IPF,54名PE) 和41名对照人群中测量了一次呼吸的DLCO和DLNO.
- 使用DLCO和ERS/Munkholm等全球肺功能倡议 (GLI) 分析的z分数. 对DLNO. 的参考方程.
- 评估敏感性,特异性和与疾病程度的相关性.
主要成果:
- 对于IPF和PE,DLCO (GLI) 和DLNO (所有方程) 显示出高灵敏度和特异性.
- 对于PE,DLCO的准确度最高,而DLNO (Munkholm等) 的准确度最高. 对IPF来说是最准确的.
- 将IPF/PE与对照组分开的门差异很大,DLCO GLI在第14个百分位,DLNO ERS在第3个百分位.
结论:
- 对于IPF和PE的DLCO和DLNO值与标准LLN值 (-1.645,-1.960z-score) 有很大差异.
- 不均的血液-空气屏障损伤可能会影响DLCO值,而设备和方程的变化会影响DLNO值.
- 目前的LLN可能需要进行调整,以便在IPF和PE中准确解释.
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