PEDIATRICS Vol. 35 No. 1 January 1965, pp. 194-199
This Article
Right arrow Full Text (PDF)
Right arrow P3Rs: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when P3Rs are posted
Right arrow Alert me if a correction is posted
Services
Right arrow E-mail this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My File Cabinet
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by DeMuth, G. R.
Right arrow Articles by Howatt, W. F.
Right arrow Search for Related Content
PubMed
Right arrow Articles by DeMuth, G. R.
Right arrow Articles by Howatt, W. F.

IV. INTRAPULMONARY GAS DISTRIBUTION

George R. DeMuth M.D.1 and William F. Howatt M.D.1

1 Department of Pediatrics, University of Michigan, Ann Arbor

1. Three tests of intrapulmonary gas distribution (the nitrogen clearance, the single-breath oxygen, and the oxygen equilibration index) were included in a study of normal children. Several adaptations for children were made.

2. When the tests include lung volume adjustments, they show no correlation with changing body size, indicating no change in the uniformity of gas distribution with growth.

3. Values of the upper limits in normal subjects for four interpretations of the three tests are given.

4. No significant correlation among the three volume-adjusted tests was found in these normal subjects.

5. Longitudinal studies of the SBO test show that for the individual some quality related to evenness of gas distribution persists during growth.