喘,COPD和喘-COPD重叠患者的定量HRCT特征的差异及其与肺功能之间的关系
Dongzhu Lu1, Huapeng Yu2, Lichang Chen3
1Department of Thoracic Oncology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, People's Republic of China.
概括
喘-COPD重叠 (ACO) 和COPD患者比喘患者表现出更多的肺气和呼吸道重塑. 空气陷在ACO中最严重,CT测量预测空气流量限制在各种条件中不同.
科学领域:
- 肺部医学 肺部医学
- 放射学 放射学是一门学科.
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 像喘和COPD这样的阻塞性呼吸道疾病具有重叠的特征,需要通过先进的成像和功能评估来区分.
- 了解喘,COPD和喘-COPD重叠 (ACO) 的独特结构和功能特征对于有针对性的治疗至关重要.
研究的目的:
- 在喘,COPD和ACO患者中比较肺功能和气道改造,肺气和空气捕获的定量CT参数.
- 在每个组中探索这些CT参数与空气流量限制之间的关系.
主要方法:
- 喘患者 (n=48),COPD患者 (n=52),ACO患者 (n=30) 和对照患者 (n=54) 的回顾性招募.
- 进行了肺功能测试和高分辨率计算机断层扫描 (HRCT).
- 定量CT分析评估了肺瘤 (LAA%),气道改造 (WA,LA,WA%) 和空气陷 (RVC-860至-950,MLDE/I).
- 统计分析包括组间的比较和结构功能关系的相关性/回归分析.
主要成果:
- 慢性慢性肺炎和ACO患者的肺气显著增加 (LAA%) 比喘患者和对照组.
- 与对照组相比,COPD和ACO患者的呼吸道壁尺寸增加 (WA%,WA);与对照组相比,喘患者的WA%和LA显著不同.
- 用RVC-860到-950来测量空气陷,在ACO中最严重,其次是COPD,然后是喘.
- RVC-860至-950独立预测了喘中的FEV1%,COPD中的LAA%和MLDE/I,以及ACO中的LAA%,WA%和RVC-860至-950.
结论:
- 肺气在COPD和ACO中是可比的,但在喘中没有. 在所有患者群体中都存在近接呼吸道重塑,在COPD/ACO中外向加厚,在喘中内向加厚.
- 空气陷在ACO患者中最严重.
- 间接的肺密度计测量可能比直接的气道测量在阻塞性肺病中更能预测气流限制的严重性.
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