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  • Title: Oxygen saturation after birth in preterm infants treated with continuous positive airway pressure and air: assessment of gender differences and comparison with a published nomogram.
    Author: Vento M, Cubells E, Escobar JJ, Escrig R, Aguar M, Brugada M, Cernada M, Saénz P, Izquierdo I.
    Journal: Arch Dis Child Fetal Neonatal Ed; 2013 May; 98(3):F228-32. PubMed ID: 23123635.
    Abstract:
    AIMS: The goal of the study was to compare preductal SpO2 in the first 10 min after birth in preterm infants treated with non-invasive continuous positive airway pressure (CPAP) and air with a published nomogram of preductal SpO2 in preterm infants who received no medical intervention, and to examine gender differences. DESIGN: Prospective observational study. PATIENTS AND METHODS: We enrolled infants of ≤32 weeks gestation who were spontaneously breathing with heart rate >100 bpm, and treated with face mask CPAP and air during postnatal stabilisation. SpO2 limits were targeted at ≥75% at 5 min and ≥85% at 10 min and heart rate at >100 bpm. FIO2 was titrated against SpO2. Preductal SpO2, airway pressure and FIO2 were recorded with a data acquisition system from birth until stabilisation. Babies receiving supplemental oxygen (>21%), positive pressure ventilation, were intubated and/or received chest compressions or drugs were excluded. RESULTS: Measurements were obtained in 102 babies with median gestational age of 29 (range: 24-31) weeks. Median SpO2 was significantly higher in the observational group than in the reference range at 3 min (82% (CI 71% to 85%) vs 76% (CI 67% to 83%); p<0.05), at 4 min (87% (CI 81% to 90%) vs 81% (CI 72% to 88%); p<0.05), at 5 min (92% (CI 88% to 95%) vs 86% (CI 80% to 92%); p<0.05), at 6 min (94% (CI 90% to 97%) vs 90% (CI 81% to 95%); p<0.05), at 7 min (95% (CI 92% to 97%) vs 92% (CI 85% to 95%); p<0.05), at 8 min (96% (CI 93% to 98%) vs 92% (CI 87% to 96%); p<0.05) and at 9 min (97% (CI 92% to 99%) vs 93% (CI 87% to 96%); p<0.05). Female babies achieved targeted SpO2 significantly earlier than male babies. CONCLUSIONS: Preterm babies receiving CPAP and air and especially female subjects achieve reference oxygen saturation more rapidly than spontaneously breathing preterm babies without respiratory aid.
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