Changes in the contribution of the rib cage to tidal breathing during infancy

M. B. Hershenson, Andrew Colin, M. E B Wohl, A. R. Stark

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

As the shape, compliance, and deformability of the rib cage (RC) change during infancy, RC participation in quiet breathing may increase. We used respiratory inductive plethysmography (RIP) to determine the relative contributions of the RC and abdomen (AB) to tidal volume (VT) in 20 studies in 14 healthy infants 1 to 26 months of age during quiet natural sleep. RIP was calibrated with simultaneous flow measurement (anesthesia mask and pneumotachograph) by the least squares method of statistical analysis. We analyzed segments of breathing with and without flow measurement for RIP-derived VT, change in RC volume (Vrc) and AB volume (Vab) with each breath and the RC contribution to tidal breathing (%RC = Vrc/Vrc + Vab). The %RC increased with age: %RC = 1.4 age (months) + 33 (r = 0.69, p < 0.01). After 9 months of age, %RC resembled that found in quietly sleeping adolescents. Mask placement increased VT in all but one subject (mean increase, 29 ± 23% of baseline ± SD; p < 0.001, paired t test). In infants younger than 10 months of age, mask placement also increased %RC (without mask, 40 ± 9%; with mask, 46 ± 10%; p < 0.02). We conclude that by 1 yr of age, the RC contribution to tidal breathing during quiet sleep is similar to that of the adolescent, suggesting that major developmental changes in RC shape, compliance, and deformability take place during infancy.

Original languageEnglish
Pages (from-to)922-925
Number of pages4
JournalAmerican Review of Respiratory Disease
Volume141
Issue number4 I
StatePublished - Jan 1 1990
Externally publishedYes

Fingerprint

Respiration
Masks
Plethysmography
Abdomen
Compliance
Rib Cage
Sleep
Tidal Volume
Least-Squares Analysis
Anesthesia

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

Hershenson, M. B., Colin, A., Wohl, M. E. B., & Stark, A. R. (1990). Changes in the contribution of the rib cage to tidal breathing during infancy. American Review of Respiratory Disease, 141(4 I), 922-925.

Changes in the contribution of the rib cage to tidal breathing during infancy. / Hershenson, M. B.; Colin, Andrew; Wohl, M. E B; Stark, A. R.

In: American Review of Respiratory Disease, Vol. 141, No. 4 I, 01.01.1990, p. 922-925.

Research output: Contribution to journalArticle

Hershenson, MB, Colin, A, Wohl, MEB & Stark, AR 1990, 'Changes in the contribution of the rib cage to tidal breathing during infancy', American Review of Respiratory Disease, vol. 141, no. 4 I, pp. 922-925.
Hershenson, M. B. ; Colin, Andrew ; Wohl, M. E B ; Stark, A. R. / Changes in the contribution of the rib cage to tidal breathing during infancy. In: American Review of Respiratory Disease. 1990 ; Vol. 141, No. 4 I. pp. 922-925.
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