学龄前健康儿童潮气呼吸肺功能测定

Lung function measurements during tidal breathing in healthy preschoolers

目的建立学龄前健康儿童肺功能正常参考值,为儿童肺功能检测在我国成为常规检查项目提供依据。方法在苏州地区随机抽取三所幼儿园,对291名3～7岁健康儿童随机抽取93名,应用美国森迪公司Vmax26型肺功能仪,进行潮气呼吸肺功能检测。结果Vmax26型肺功能仪测定儿童潮气呼吸肺功能得出潮气流速容量环的图像,包括潮气呼吸流速容量环、流速时间曲线;单阻断技术得出被动呼气的流速容量曲线。结论无创小儿潮气呼吸肺功能检查对评估儿童肺功能具有重要应用价值,可为预防学龄前儿童肺部疾病提供有益参照标准。

Objective To establish the normal reference value of lung function test via tidal breathing measurement in healthy preschoolers for making the lung function test as a routine medical examination. Methods Lung function was measured by the tidal breathing pattern in 93 healthy preschoolers （3-Tyears old） using Vmax26 PF instrument. Results Lung function was determined by tidal breathing flow volume loops（TBFVL） and passive respiratory mechanics or single breath occlusion technique （SOT）. TBFVL included tidal breathing flow-volume loops and tidal breathing flow-time curves. The passive expiratory flow-volume curves were painted using SOT. Conclusion The lung function measurement during tidal breathing in children is of important value for evaluation of the lung function and offers the valid criteria in prevention of lung diseases in preschoolers.