Lord P W, Brooks A G
Thorax. 1977 Feb;32(1):60-6. doi: 10.1136/thx.32.1.60.
An automated method of measuring airways resistance (Raw) and thoracic gas volume (Vtg) by whole body plethysmography using a digital computer is described. The results obtained by this method are compared with those obtained by an experienced observer and the results of consistency tests on the two methods are given. There was wide variability in the values of Raw obtained using each method, and no significant differences were found between the two methods. The values of Vtg obtained by them were highly correlated, but the results obtained manually were higher than those obtained automatically by an amount proportional to the volume. The consistency of the computer measurements was shown to be greater than that of the manual method. A significant decrease between successive measurements of Raw in some subjects was noted in the manual observations but not in those derived from the automated method. The new method is suitable for the rapid determination of Raw and Vtg.
描述了一种使用数字计算机通过全身体积描记法测量气道阻力（Raw）和胸腔气体容积（Vtg）的自动化方法。将该方法获得的结果与经验丰富的观察者获得的结果进行比较，并给出了两种方法的一致性测试结果。使用每种方法获得的Raw值存在很大差异，且两种方法之间未发现显著差异。它们获得的Vtg值高度相关，但手动获得的结果比自动获得的结果高，高出的量与容积成比例。计算机测量的一致性大于手动方法。在手动观察中，注意到一些受试者连续测量的Raw之间有显著下降，但在自动方法得出的结果中未发现。新方法适用于快速测定Raw和Vtg。
