SPIROMETRY IN CHILDREN - METHODOLOGY FOR OBTAINING OPTIMAL RESULTS FOR CLINICAL AND EPIDEMIOLOGIC STUDIES

Abstract
Spirometric methodology for clinical and epidemiologic use in children was evaluated in 123 third and fourth grade school children 8 and 9 yr of age. They performed spirometric testing in the middle of Oct. and again in the middle of Nov., 1979. Spirometric standards developed from adult studies can be applied to children. A minimum of 5 and a maximum of 8 maneuvers should be attempted to provide at least 3 acceptable tracings. In children, the allowable difference between the 2 best acceptable tracings of 5% or 100 ml, whichever is greater, was demonstrated to be a reasonable guideline. The results are equally reproducible when the maximal values, the mean of the 2 or 3 best values or the values from the best sum tracing (the tracing with the highest value for the sum of the FVC [forced vital capacity] and FEV1 [1-s forced expiratory volume]) are used.

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