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目的：为获得高原地区学龄前儿童最大呼气流速（ＰＥＦＲ）参考值，便于对哮喘患儿的监测及治疗。方法：用简易呼气峰速仪，对昆明市４０４名３～６岁健康儿童按性别、年龄、身高及体重作分组测试。结果：男女童ＰＥＦＲ值分别为１１４５９±４１０８Ｌ／ｍｉｎ和９７５４±４１１５Ｌ／ｍｉｎ，差异有显著性，Ｐ＜０００１。随年龄、身高、体重（三指标）增长ＰＥＦＲ值亦增大。男女间差异有显著性Ｐ＜００１至Ｐ＜０００１。经多元回归分析ＰＥＦＲ与三指标呈正相关。身高与低海拔地区ＰＥＦＲ值〔１〕相比低于后者。结论：调查说明ＰＥＦＲ与性别、年龄、身高、体重、海拔有密切关系。海平面地区的ＰＥＦＲ值，不适宜用来判定高原地区的呼吸功能状况，须依据当地的参考值作为判定标准。
Objective: To obtain the maximum expiratory flow rate (PEFR) of preschool children in plateau area, and to facilitate the monitoring and treatment of asthmatic children. Methods: A total of 404 healthy children aged 3 ~ 6 years in Kunming were divided into groups according to sex, age, height and body weight by simple breath expiratory meter. Results: The PEFR values of boys and girls were 114.59 ± 41.08 L / min and 97.54 ± 41.15 L / min, respectively, with significant difference (P <0001). With age, height, weight (three indicators) increased PEFR values also increased. The difference between men and women was significant P <0 01 to P <0 001. Pultivariate regression analysis of PEFR and three indicators were positively correlated. Height and low altitude PE FR value 〔1〕 lower than the latter. Conclusion: The survey shows that PEFR and gender, age, height, weight, altitude are closely related. PEFR values in sea-level areas are not suitable for determining respiratory function in plateau areas, and should be based on local reference values.