EVALUATION OF THE TURBINE POCKET SPIROMETER
EVALUATION OF THE TURBINE POCKET SPIROMETER
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DOI：
10.1136/thx.42.9.689
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发表时间：
1987-09-01
期刊：
影响因子：
10
通讯作者：
SMITH, AP
中科院分区：
文献类型：
--
作者：
GUNAWARDENA, KA;HOUSTON, K;SMITH, AP
我们将99名受试者（FEV1范围0.40-5.50升；FVC范围0.58-6.48 1;PEF 40-650 l min-1）的FEV1、强制肺活量（FVC）和呼气峰流量（PEF）与Vitalograph和Wright峰值流量仪进行了比较，该袖珍涡轮肺活量计测量了一次呼气中的FEV1、用力肺活量（FVC）和呼气峰流量（PEF）。机器之间的平均差异很小，FEV1为0.05，FVC为0.05，PEF为11.61 min-1，一致的极限为。+-。0.25 1, .+-。0.48 1, +-。52.2分-1。PEF比较的广泛限制可能是因为吹气技术的差异：口袋肺活量计使用了快速，长时间的吹气，莱特峰值流量计使用了短而尖锐的吹气。FEV1和FVC显示出约4-5%的比例偏倚，有利于Vitalograph。袖珍肺活计FEV1的重复性系数为0.18 1，FVC为0.22 1，PEF为311 min-1。这些结果与生命记录仪和赖特峰流量计的重复性系数（分别为0.18 1、0.281和271 min-1）吻合良好。当流量超过6001min -1时，袖珍肺活量计的阻力略高于美国胸科学会的推荐值。该机器易于操作和便携，并且比Vitalograph和Wright峰值流量计组合更便宜。推荐一般使用。
A compact electronic spirometer, the turbine pocket spirometer, which measures the FEV1, forced vital capacity (FVC), and peak expiratory flow (PEF) in a single expiration, was compared with the Vitalograph and the Wright peak flow meter in 99 subjects (FEV1 range 0.40-5.50 litres; FVC 0.58-6.48 1; PEF 40-650 l min-1). The mean differences between the machines were small-0.05 1 for FEV1, 0.05 for FVC, and 11.61 min-1 for PEF, with the limits of agreement at .+-. 0.25 1, .+-. 0.48 1, and .+-. 52.2 1 min-1 respectively. The wide limits of agreement for the PEF comparison were probably because of the difference in the technique of blowing: a fast, long blow was used for the pocket spirometer and a short, sharp one for the Wright peak flow meter. The FEV1 and FVC showed a proportional bias of around 4-5% in favour of the Vitalograph. The repeatability coefficient for the pocket spirometer FEV1 was 0.18 1, for FVC 0.22 1, and for PEF 311 min-1. These compared well with the repeatability coefficients of the Vitalograph and the Wright peak flow meter, which gave values of 0.18 1, 0.281, and 271 min-1 respectively. At flow rates of over 600 1 min-1 the resistance of the pocket spirometer marginally exceeded the American Thoracic Society recommendations. The machine is easy to operate and portable, and less expensive than the Vitalograph and Wright peak flow meter combined. It can be recommended for general use.