STANDARD FLOW-TIME WAVE-FORMS FOR TESTING OF PEF METERS
STANDARD FLOW-TIME WAVE-FORMS FOR TESTING OF PEF METERS
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DOI：
10.1164/ajrccm.152.2.7633728
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发表时间：
1995-08-01
影响因子：
24.7
通讯作者：
CRAPO, RO
中科院分区：
文献类型：
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作者：
HANKINSON, JL;CRAPO, RO
美国胸科学会（ATS）建议使用24个容积-时间波形进行肺量计测试。虽然这些波形包括呼气峰流量（PEF）值，但它们最初并不用于测试PEF仪表，而是用于测试肺活量计的容积参数。此外，使用具有变化的倍增因子的ATS体积-时间波形24的实践不能提供评估PEF仪表所需的流量-时间波形形状（上升时间）的范围。因此，我们开发了一组26个流量时间波形，专门用于评估PEF仪表。PEF和其他流量参数（上升时间和PEF时间）可以直接从这些流量时间波形测量。当将直接从流量-时间曲线测定的PEF与间接从容量-时间曲线测定的PEF（ATS推荐的算法，时间段为80 ms）进行比较时，使用快速上升时间的波形观察到两种方法之间的差异高达10.7%。相比之下，对于具有较慢上升时间的波形，导出PEF的各种方法之间的差异非常小。这26个行时间波形提供了一种定义软件算法测试和使用计算机驱动机械泵测试PEF仪表的PEF的方法。
The American Thoracic Society (ATS) has recommended the use of 24 volume-time waveforms for the testing of spirometers. Although these waveforms include values of peak expiratory flow (PEF), they were not originally intended to test PEF meters but, rather, volume parameters for spirometers. In addition, the practice of using ATS volume-time Waveform 24 with varying multiplying factors does not provide the range of flow-time waveform shapes (rise times) needed to evaluate PEF meters. Accordingly, we have developed a set of 26 flow-time waveforms specifically selected to evaluate PEF meters. PEF and other flow parameters (rise time and time to PEF) can be directly measured from these flow-time waveforms. When PEF determined directly from the flow-time curve was compared with PEF determined indirectly from a volume-time curve (ATS-recommended algorithm with an 80 ms time segment), as much as a 10.7% difference between the two methods was observed using a waveform with a fast rise time. In contrast, there was very little difference between the various methods of deriving PEF for waveforms with slower rise times. These 26 Row-time waveforms provide a means of defining PEF for the testing of software algorithms and the testing of PEF meters with computer-driven mechanical pumps.