SciELO - Scientific Electronic Library Online

 
vol.85 issue5Quality of life of children and adolescents with rheumatic feverIron absorption from infant formula and iron-fortified cow's milk: experimental model in weanling rats author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Jornal de Pediatria

Print version ISSN 0021-7557

Abstract

OLIVEIRA, Trícia G. et al. Prone position and reduced thoracoabdominal asynchrony in preterm newborns. J. Pediatr. (Rio J.) [online]. 2009, vol.85, n.5, pp. 443-448. ISSN 0021-7557.  http://dx.doi.org/10.1590/S0021-75572009000500013.

OBJECTIVE: To assess the effect of prone and supine positions on breathing pattern variables, thoracoabdominal motion and peripheral oxygen saturation of hemoglobin of premature newborn infants recovering from respiratory distress syndrome, while breathing spontaneously and in rapid eye movement sleep. METHODS: This was a quasi-experimental study. Twelve preterms weighing > 1,000 g at enrollment were studied in both positions, in random order. Respiratory inductive plethysmography was used to analyze breathing pattern (tidal volume, respiratory rate, minute ventilation, mean inspiratory flow) and thoracoabdominal motion (labored breathing index, phase relation in inspiration, phase relation in expiration, phase relation in total breath and phase angle). Pulse oximetry was used to evaluate peripheral oxygen saturation. Student's t test for paired samples or the Wilcoxon test were used for statistical analysis. Significance was set at p < 0.05. RESULTS: A total of 9,167 respiratory cycles were analyzed. The prone position was associated with significant reductions in labored breathing index (-0.84±0.69; p = 0.001; 95%CI -1.29 to -0.40), phase relation in inspiration (-27.36±17.55; p = 0.000; 95%CI -38.51 to -16.20), phase relation in expiration (-32.36±16.20; p = 0.000; 95%CI -42.65 to -22.06) and phase relation in total breath (-30.20±14.76; p = 0.000; 95%CI -39.59 to -20.82). There were no significant differences between the two positions in any of the other variables analyzed. CONCLUSION: The prone position resulted in a significant reduction in thoracoabdominal asynchrony, without affecting breathing pattern or peripheral oxygen saturation.

Keywords : Prone position; supine position; premature newborn infants; respiratory distress syndrome.

        · abstract in Portuguese     · text in English | Portuguese     · pdf in English | Portuguese