在老年人中,气道树口径异质性和空气流阻塞
Motahareh Vameghestahbanati1, Leina Kingdom1, Eric A Hoffman2
1Department of Medicine, McGill University, Montreal, Quebec, Canada.
Journal of applied physiology (Bethesda, Md. : 1985)
|February 29, 2024
概括
气道树口径异质性是衡量气道大小变化的指标,与老年人的气流阻塞和慢性阻塞性肺病 (COPD) 有关. 这种结构性肺部特征与基线肺功能有关,但与其下降速度无关.
科学领域:
- 肺部医学 肺部医学
- 放射学 放射学是一门学科.
- 定量成像技术 定量成像技术
背景情况:
- 较小的平均气道树口径是空气流阻塞和慢性阻塞性肺病 (COPD) 的已知危险因素.
- 气道树口径异质性在COPD发展和进展中的作用仍然不太了解.
研究的目的:
- 调查气道树口径异质性与包括COPD在内的空气流阻塞之间的关联.
- 确定气道树口径异质性是否预测肺功能纵向变化.
主要方法:
- 使用计算机断层扫描 (CT) 扫描和来自三个队列的螺旋计 (MESA Lung,CanCOLD,SPIROMICS).
- 量化气道树口径异质性作为预测的气道百分比光径的标准偏差.
- 评估了使用调整后回归模型与基线FEV1,FEV1/FVC,COPD状态和纵向螺旋计的相关性.
主要成果:
- 较高的气道树口径异质性与较低的基线FEV1,较低的FEV1/FVC有关,并且在老年人中增加了COPD的几率.
- 这些关联是独立于年龄,性别,身高,种族-种族,和平均气道口径.
- 在气道树口径异质性和FEV1或FEV1/FVC的纵向变化之间没有发现显著的关联.
结论:
- 气道树口径异质性是一个重要的结构性特征,与老年人普遍的气流阻塞和COPD有关.
- 这种异质性似乎影响了基线肺功能,而不是肺功能下降的速度.
- CT衍生的气道树口径异质性可能在COPD的背景下作为一个有价值的生物标志物.
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