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Relative contribution of ribcage and abdomen during augmented breaths in infants
Author(s) -
Mathew Oommen P.,
Pronske Maria L.,
Clark Mark L.
Publication year - 1988
Publication title -
pediatric pulmonology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.866
H-Index - 106
eISSN - 1099-0496
pISSN - 8755-6863
DOI - 10.1002/ppul.1950040303
Subject(s) - medicine , tidal volume , abdomen , anesthesia , respiratory system , anatomy
Changes in the relative contribution of ribcage and abdomen during augmented breaths were assessed in two groups of infants (<2 weeks and 4–12 weeks old). In both groups ribcage and abdominal movements increased during augmented breaths in quiet sleep. In the older infants the relative increase was greater for the ribcage (P < 0.05) when expressed either as a ribcage to abdominal movement ratio or as a percent of the respective movements during control breaths. In contrast, no significant change of the relative contribution was observed in the younger age group. During active sleep paradoxical movement of the ribcage, observed during tidal breaths, continued during the first phase of the augmented breath; however, during the second phase of inspiration, the ribcage moved outward in all but one infant. Our results show that marked increases in tidal volume are associated with greater increases in ribcage contribution in infants beyond the neonatal period. This may reflect differences in recruitment patterns of intercostal muscles during development.