小儿呼吸阻力的分级

Fractionating respiratory resistance in young children.

作者信息

Williams S P, Pimmel R L, Fullton J M, Tsai M J, Collier A M

出版信息

J Appl Physiol Respir Environ Exerc Physiol. 1979 Sep;47(3):551-5. doi: 10.1152/jappl.1979.47.3.551.

DOI:10.1152/jappl.1979.47.3.551

Abstract

Total respiratory resistance (Rrs) and the fraction of this resistance located peripherally, (Fp) were measured in a group of children (3--5 yr old). The technique used forced random noise to characterize the frequency dependence of effective resistance and an algorithm to compute Rrs and Fp from these data. The overall mean value +/- SD for Fp was 0.534 +/- 0.070; the mean value of 0.464 for the six children near 5 yr of age was significantly different (P less than 0.001) from the mean value of 0.576 found in the younger children. The overall mean value +/- SD for Rrs was 16.9 +/- 5.8 cmH2O.l-1.s; individual values appeared to be correlated with height. These results agree with previous reports indicating that children have a larger fraction of respiratory resistance in the periphery than do adults.

摘要

在一组儿童（3至5岁）中测量了总呼吸阻力（Rrs）及其外周阻力所占比例（Fp）。该技术使用强迫随机噪声来表征有效阻力的频率依赖性，并使用一种算法从这些数据计算Rrs和Fp。Fp的总体平均值±标准差为0.534±0.070；6名接近5岁儿童的平均值0.464与年幼儿童中发现的平均值0.576有显著差异（P<0.001）。Rrs的总体平均值±标准差为16.9±5.8 cmH2O·l-1·s；个体值似乎与身高相关。这些结果与先前的报告一致，表明儿童外周呼吸阻力的比例比成人更大。