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  • Title: Pediatric ARDS: effect of supine-prone postural changes on oxygenation.
    Author: Casado-Flores J, Martínez de Azagra A, Ruiz-López MJ, Ruiz M, Serrano A.
    Journal: Intensive Care Med; 2002 Dec; 28(12):1792-6. PubMed ID: 12447525.
    Abstract:
    OBJECTIVE: To determine the effect of repeated prone positioning (supine-prone/prone-supine) on oxygenation in children suffering from ARDS. DESIGN: Single-center prospective case series. SETTING: University pediatric ICU. PATIENTS: Consecutive pediatric patients with severe ARDS (PaO(2)/FiO(2) <200, Murray score >2.5). INTERVENTIONS: Patients were treated as soon as possible with supine-prone/prone-supine positioning every 8 h until clinical improvement or death occurred. MEASUREMENTS AND RESULTS: Twenty-three patients who had ARDS (0.5-months to 12.6-years-old), were placed in the prone position within 56+/-109 h after the diagnosis of ARDS. Prone-supine/supine-prone postural changes were repeated every 8 h for 9.7+/-5.5 days. Changes in PaO(2)/FiO(2) ratio during supine-prone and prone-supine positioning were evaluated. A positive change was defined as an increase of 15% of baseline value. The patient was classified as a responder when the mean increase in the prone position was greater than 15%. There were 18 responders and five non-responders. The responders showed an increase in PaO(2)/FiO(2) ratio of 22%, from 91+/-33 to 112+/-43 (P <0.001), when they were placed from the supine to the prone position. Their PaO(2)/FiO(2) ratio dropped from 109+/- 37 to 94 +/-36, P = 0.011, when changed from the prone to supine position. The overall mortality rate in this series was 48% (11 patients), which was higher in the non-responders (80%) than in the responders (39%), although this difference was not statistically significant (P = 0.95). CONCLUSIONS: The prone position improves oxygenation in a significant proportion of children with ARDS. Although no statistically significant difference was found for the mortality rate, it was higher for the non-responders (80%) vs the responders (39%).
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