对于小气道功能检查的主要手段是最大呼气流速—容量曲线(MEFV)测定。严格筛选男女各100名,健康成人,年龄由16～60岁,每10岁为一年龄组,要求条件:无心肺疾病;体格检查正常;不吸烟;不在大气污染区居住;胸部x线检查正常;肺活量百分比80％以上,一秒时间肺活量百分比75％以上。使用国 The primary measure for small airway function testing is maximal expiratory flow-volume curve (MEFV). Strict screening of 100 men and women, healthy adults, aged from 16 to 60 years old, every 10 years for the age group, conditions: no heart and lung disease; physical examination was normal; no smoking; do not live in air pollution area; chest x-ray examination was normal ; The vital capacity percentage is more than 80%, the percentage of vital capacity in one second is more than 75%. Country of use