Abstract
A new miniature Wright peak-flow meter has been designed and produced. The meter is tubular with a spring-loaded piston and a longitudinal slot through which air escapes. Its dynamic characteristics have been carefully designed to make it respond only to peak flow and not to rate of rise. Performance tests on early instruments showed fairly close correlation with the Wright peak-flow meter but with a constant error of + 38 1/min. On later models the correlation was increased to 0.990 and the error reduced to + 3%. The mini-meter correlates as well with the standard instrument as two standard instruments correlate with each other and should prove useful clinically.
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- Anderson J. P. The low-range flow meter used by school entrants. Br J Clin Pract. 1966 Dec;20(12):635–637. [PubMed] [Google Scholar]
- DEBONO E. F. A WHISTLE FOR TESTING LUNG FUNCTION. Lancet. 1963 Nov 30;2(7318):1146–1147. doi: 10.1016/s0140-6736(63)90796-7. [DOI] [PubMed] [Google Scholar]
- Friedman M., Walker S. Assessment of lung function using an air-flow meter. Lancet. 1975 Feb 8;1(7902):310–311. doi: 10.1016/s0140-6736(75)91212-x. [DOI] [PubMed] [Google Scholar]
- Haydu S. P., Chapman T. T., Hughes D. T. Pulmonary monitor for assessment of airways obstruction. Lancet. 1976 Dec 4;2(7997):1225–1225. doi: 10.1016/s0140-6736(76)91147-8. [DOI] [PubMed] [Google Scholar]
- Spitzer S. A., Neuman E. New expiratory peak flow meter: preliminary report. Chest. 1974 Oct;66(4):440–441. doi: 10.1378/chest.66.4.440. [DOI] [PubMed] [Google Scholar]
- WRIGHT B. M., McKERROW C. B. Maximum forced expiratory flow rate as a measure of ventilatory capacity: with a description of a new portable instrument for measuring it. Br Med J. 1959 Nov 21;2(5159):1041–1046. doi: 10.1136/bmj.2.5159.1041. [DOI] [PMC free article] [PubMed] [Google Scholar]