Tabachnik E, Muller N, Toye B, Levison H
J Pediatr. 1981 Dec;99(6):895-9. doi: 10.1016/s0022-3476(81)80012-1.
A new technique to measure ventilation, based on the separate contributions of rib cage and abdomen to tidal volume, the respiratory inductive plethysmograph was evaluated in 20 healthy children. The accuracy of the method was determined by simultaneously measuring tidal volume with a pneumotachograph in the standing, sitting, supine, left lateral decubitus, and prone postures. Comparison of these two techniques showed mean correlation coefficients greater than 0.96, mean slopes between 0.98 and 1.11, and mean SEE of less than 8% in all postures studied. Breathing through a mouthpiece connected to a pneumotachograph resulted in a substantial change in the pattern of breathing and a mean increase in tidal volume of 32% (P less than 0.05). In the standing and sitting postures, rib cage contribution to tidal volume was predominant (greater than 65%) whereas in the recumbent postures abdominal contribution was predominant (greater than 61%). We conclude that the RIP is an accurate means of measuring ventilation in children and that it avoids the artifacts caused by using a conventional respiratory measuring apparatus.
一种基于胸廓和腹部对潮气量的不同贡献来测量通气的新技术——呼吸感应体积描记器，在20名健康儿童中进行了评估。通过在站立、坐、仰卧、左侧卧位和俯卧位时用呼吸流速仪同时测量潮气量来确定该方法的准确性。这两种技术的比较显示，在所有研究体位中，平均相关系数大于0.96，平均斜率在0.98至1.11之间，平均标准误小于8%。通过连接到呼吸流速仪的咬嘴呼吸会导致呼吸模式发生显著变化，潮气量平均增加32%（P<0.05）。在站立和坐姿时，胸廓对潮气量的贡献占主导（大于65%），而在卧位时腹部贡献占主导（大于61%）。我们得出结论，呼吸感应体积描记器是测量儿童通气的一种准确方法，并且它避免了使用传统呼吸测量设备所引起的伪影。
