Relative contribution of ribcage and abdomen during augmented breaths in infants.

Abstract:

:Changes in the relative contribution of ribcage and abdomen during augmented breaths were assessed in two groups of infants (less than 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 less than 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.

journal_name

Pediatr Pulmonol

journal_title

Pediatric pulmonology

authors

Mathew OP,Pronske ML,Clark ML

doi

10.1002/ppul.1950040303

subject

Has Abstract

pub_date

1988-01-01 00:00:00

pages

134-8

issue

3

eissn

8755-6863

issn

1099-0496

journal_volume

4

pub_type

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