Chiaramonte L T, Prabhu S L
Ann Allergy. 1981 Aug;47(2):95-8.
A peak flow (PF) measuring device, the Peak Flow Whistle (PFW), has recently been designed. The principle of a threshold activated reed is utilized to register PF, which differs significantly from the spring distortion mechanism utilized in currently marketed devices. Prototypes of the PFW were tested in the laboratory and in clinical settings as part of our preliminary studies. When compared with a pneumotachograph in the laboratory, the values correlated significantly (p less than .0001). In field studies both in asthmatic and non-asthmatic children, the PFW values correlated significantly (p less than .0001) with those of the Wright Peak Flow Meter and performance was found to be satisfactory.
一种峰值流速（PF）测量装置——峰值流速哨（PFW）最近已被设计出来。它利用阈值激活簧片的原理来记录峰值流速，这与目前市场上销售的装置所采用的弹簧变形机制有显著不同。作为我们初步研究的一部分，PFW的原型在实验室和临床环境中进行了测试。在实验室中与呼吸流速计相比，两者的值显著相关（p小于0.0001）。在针对哮喘和非哮喘儿童的实地研究中，PFW的值与赖特峰值流速仪的值显著相关（p小于0.0001），并且发现其性能令人满意。
