Performance testing new peak flow meters.
نویسندگان
چکیده
منابع مشابه
Eleven peak flow meters: a clinical evaluation.
Peak flow meters are essential tools in the management of asthma. Many types are on the market. A computer-driven piston pump is normally not available for evaluation of the various meters. Comparison with values from a pneumotachograph is an accepted way of testing peak flow meters. This study aims at comparing 11 peak flow meters, for accuracy and linearity. Seven adult peak flow meters were ...
متن کاملCalibration of some Wright peak flow meters.
The performance of Wright peak flow meters is described using an absolute and precise calibration method. This showed errors as great as 25% with the peak flow meter and 40% with the mini peak flow meter. At large flow rates errors were less. The expected variation between individual peak flow meters was about 12%. The expected variation between individual mini peak flow meters was between 16% ...
متن کاملBovine TB in badgers: a reappraisal of aetiology and pathogenesis.
I read with great interest the article of Miles et al. (1) about the performance of mini Wright peak flow meters after prolonged use. We performed a study (2) comparing the reliability of five new mini Wright peak flow meters before and after 10 000 compressed air impulses of about 4.50 1 min ’ flow, controlled by an electronically driven magnetic valve. There were no significant deviations of ...
متن کاملFrequency response of variable orifice type peak flow meters: requirements and testing.
Little is known about the response of variable orifice peak flow meters to high frequency flow input. The purpose of this study was to define and test dynamic requirements for such peak flow meters. In a population sample we measured peak expiratory flow (PEF), rise time (tr), from 10-90% PEF and the duration of the flow in excess of 97.5, 95 and 90% of PEF, by use of a carefully calibrated Fle...
متن کاملMini-Wright peak flow meters are reliable after 5 years use. Dutch CNSLD Study Group.
In studies with a long-term follow-up, peak expiratory flow (PEF) meters are often used to assess bronchial obstruction. The question arises whether data obtained with these frequently used meters are still reliable after several years of use, and whether the old meters should be renewed after a certain period. In the present study, we tested the reliability of PEF values measured with mini-Wri...
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عنوان ژورنال:
- The European respiratory journal
دوره 12 2 شماره
صفحات -
تاریخ انتشار 1998