Comparison of the lower limit of normal to the fixed ratio method for the diagnosis of airflow obstruction at high altitudes: a large cross-sectional survey of subjects living between 3000–4700 m above sea level

Comparison of the lower limit of normal to the fixed ratio method for the diagnosis of airflow obstruction at high altitudes: a large cross-sectional survey of subjects living between 3000–4700 m above sea level

Abstract Background There is no general agreement on the preferential use of a fixed ratio (FR) of forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) < 0.7 vs. the lower limit of normal (LLN) of FEV1/FVC to define airflow obstruction. Determining the impact of these different cut-...

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Bibliographic Details
Main Authors: Yilin Huang, Zhenzhen Xing, Jean-Paul Janssens, Di Chai, Weiming Liu, Yuxia Wang, Yali Ma, Yaqi Tong, Yanfei Guo
Format: Article
Language:English
Published: BMC 2023-06-01
Series:European Journal of Medical Research
Subjects:
LLN
Diagnosis
COPD
Spirometry
Lung function
Online Access:https://doi.org/10.1186/s40001-023-01151-1

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