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近年来,临床多致力于小气道功能测定及其应用的研究,但不应忽视被长期列为反映气道阻塞程度的定量指标即第一秒钟用力呼气量占用力肺活量百分比(FEV_1％)的应用价值。为此,本文对261例慢性阻塞性肺病(COPD)患者的常规肺功能FEV_1％、实测肺活量占预计值百分比(VC％)、残气量占肺总量百分比(RV/TLC％)和实测最大通气量占预计值百分比(MBC％)等各指标间的关系进行分折,探索FEV_1％在COPD诊断中的临床意义。
In recent years, more clinical efforts to determine small airway function and its application, but should not be ignored as long-term as a quantitative indicator of airway obstruction that the first second forced expiratory volume occupancy force vital capacity (FEV_1%) The application value. In this study, we measured FEV 1% of 261 patients with chronic obstructive pulmonary disease (COPD), measured% vital capacity (VC%), RV / TLC% and measured maximal ventilation The proportion of expected percentage (MBC%) and other indicators of the relationship between the break points to explore the clinical significance of FEV_1% in the diagnosis of COPD.