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EXPIRATORY FLOW RATES DETERMINED BY WEDGE AND WATER SPIROMETER IN CHILDREN AND YOUNG ADULTS
Author(s) -
LEVISON H.,
KAMEL M.,
WENG T.R.,
KRUGER K.
Publication year - 1970
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1970.tb17699.x
Subject(s) - spirometer , medicine , airway obstruction , spirometry , asthma , airway , pediatrics , cardiology , surgery , exhaled nitric oxide
SUMMARY A comparison between measurements made with a conventional water spirometer and those with a wedge spirometer on 82 healthy normal subjects from 6 to 18 years of age and from 111.5 to 176.5 cm in height was made. Fourteen children with symptomatic asthma were also studied. It was found that the FVC and FEV 1 were similar on both instruments. The values for V̇ 50 and MMEF were different, because V̇ 50 is an instantaneous measurement, whereas MMEF is a mean obtained over a wide range of lung volumes. It is suggested that V̇ 50 may be a more sensitive index of airway obstruction than the regular MMEF measurement.