Onset of respiration in infants delivered by cesarean section

• DOI: 10.1152/jappl.1982.52.3.716
• Publication Date: 2017-12-25T04:45:40Z
• Authors: J. P. Mortola; J. T. Fisher; J. B. Smith; G. S. Fox; S. Weeks; D. Willis
• Keywords: Expiration; Residual volume; Respiratory Rate

We studied the ventilatory parameters and pattern of breathing including onset respiration in 20 healthy infants immediately after cesarean-section delivery. In eight further measurements were obtained at 60 min life. The delivery is very irregular with a marked tendency to keep lung inflated mainly through interruptions expiration. After first expiration some air remains representing formation functional residual capacity (FRC). FRC breath proportional previous inspired volume largest contribution towards full establishment FRC. Tidal are similar that reported babies delivered vaginally, which suggests forces required for inflation two groups infants. tends be deeper slower has longer expiratory time than subsequent breaths. At life respiratory becomes more regular, tidal decreased, frequency increased reduction time.