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依据慢性阻塞性肺疾病 (ＣＯＰＤ)全球倡议 (ＧＯＬＤ)的分级标准[1 ] ,将有慢性咳嗽、咳痰、肺功能ＦＥＶ1 /ＦＶＣ≥ 70 %的患者归为ＣＯＰＤ 0级。尽管对于ＣＯＰＤ 0级患者常规肺功能检查不能显示气流受限 ,但依据ＣＯＰＤ的发病机制 ,我们认为通过某些肺功能测定有可能
Patients with chronic cough, expectoration, and ≥ 70% of pulmonary function FEV1 / FVC were classified as COPD 0 according to the GOLD classification criteria [1]. Although routine pulmonary function tests do not show airflow limitation for COPD class 0 patients, we believe it is possible to pass certain lung function tests based on the pathogenesis of COPD