健康婴幼儿潮气流速容量曲线特点及意义

被引:35
作者
吴冀川
樊寻梅
刘玺成
王蕾
机构
[1] 北京市儿童医院!,北京市儿童医院!,北京市儿童医院!,北京市儿童医院!
关键词
健康婴幼儿; 潮气流速容量环;
D O I
暂无
中图分类号
R725.6 [小儿呼吸系及胸部疾病];
学科分类号
100202 ;
摘要
了解健康婴幼儿潮气流速容量(TFV)环形态特点及呼吸生理意义。方法研究对象为44例1~22mo健康婴幼儿.应用森迪2600儿童肺功能仪记录其在安静睡眠状态下的TFV环及有关参数。结果TFV环近似椭圆形,呼气高峰位置靠前,呼气曲线降支倾斜,随月龄增长,呼气高峰略后移,降支抬高,呼气曲线渐趋圆滑。吸气曲线各月龄组均呈半圆形。有关参数PTEF、%V-PF、Tp/Te及25/PF值在1~6mo与13~22mo两月龄组间有显著差异。结论健康婴幼儿TFV环近似椭圆形。潮气呼吸功能在婴幼儿阶段发育迅速,潮气呼气过程气道阻力不恒定,小婴儿在下呼吸道感染时易出现呼气阻力增加及流速受限。
引用
收藏
页码:11 / 12
页数:2
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