Melia R J, Swan A V, Clarke G, du Ve Florey C, Nelson A M
Bull Eur Physiopathol Respir. 1985 Jan-Feb;21(1):43-7.
The performance of a new turbine spirometer, which has several advantages over equipment previously used to measure lung function, was compared with that of a conventional spirometer (Vitalograph) in a cross-over trial on 368 children six to 11 years old. On average, slightly higher values of forced expiratory volume at 0.75 s and forced vital capacity were recorded on the turbine spirometer. These differences occurred mainly in children aged less than eight years. Assuming the Vitalograph remained accurate, there appeared to be a slight tendency for readings on the turbine spirometer to drift downwards at a rate of 0.04 1 per 100 children measured but this was not statistically significant (p greater than 0.10). In conclusion, the machines differed mainly in the youngest age group. Until a recording of the complete expiration curve can be made using the turbine spirometer, it is not possible to assess whether this effect of age arose because of errors in the breath manoeuvre by younger children undetectable in the turbine spirometer or because the simpler design of the spirometer makes it easier than the Vitalograph for young children to use it correctly.
在一项针对368名6至11岁儿童的交叉试验中，将一种新型涡轮式肺活量计（与先前用于测量肺功能的设备相比有几个优点）与传统肺活量计（维托拉夫肺活量计）的性能进行了比较。平均而言，涡轮式肺活量计记录的0.75秒用力呼气量和用力肺活量值略高。这些差异主要出现在8岁以下的儿童中。假设维托拉夫肺活量计仍然准确，涡轮式肺活量计的读数似乎有以每测量100名儿童0.04升的速率轻微向下漂移的趋势，但这在统计学上并不显著（p大于0.10）。总之，这两种仪器的差异主要出现在最年幼的年龄组。在能够使用涡轮式肺活量计记录完整呼气曲线之前，无法评估年龄的这种影响是因为涡轮式肺活量计无法检测到的年幼儿童呼吸动作错误，还是因为肺活量计更简单的设计使年幼儿童比使用维托拉夫肺活量计更容易正确使用它。
