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  • Title: Prenatal dexamethasone treatment in conjunction with rescue therapy of human surfactant: a randomized placebo-controlled multicenter study.
    Author: Kari MA, Hallman M, Eronen M, Teramo K, Virtanen M, Koivisto M, Ikonen RS.
    Journal: Pediatrics; 1994 May; 93(5):730-6. PubMed ID: 8165070.
    Abstract:
    OBJECTIVES: A placebo-controlled, randomized, double-blind study was performed to determine whether prenatal dexamethasone (DEX) treatment improves the outcome of the preterm infant when exogenous surfactant is available. METHODS: 157 pregnant women at five hospitals with threatened preterm delivery and with lengths of gestation < 32 weeks received either DEX (dose 6 mg four times at 12-hour intervals) or placebo (PL). Prenatal treatment was not repeated. Preterm infants received rescue therapy of human surfactant (maximum four doses) if they required ventilatory support and at least 40% oxygen for the treatment of respiratory distress syndrome (RDS). RESULTS: Enrolled pregnant women delivered 188 live-born neonates, of whom 79 (DEX 41 and PL 38 neonates) were born 1 to 14 days after the prenatal treatment. Neonates born within 1 to 14 days after the initial DEX treatment had a lower incidence of RDS (DEX, 44%; PL, 79%; P < .01), lower requirements of surfactant (DEX, 22%; PL, 53%; P < .01), shorter duration of ventilatory support (DEX, 2.0 days; PL, 5.3 days; P < .05) and oxygen therapy (DEX, 2.0 days; PL, 7.0 days; P < .01), and a higher neonatal survival without ventilatory support (P < .05) than PL-treated neonates. DEX-treated neonates had higher mean blood pressure than PL-treated neonates during the first 3 days after birth. Among all neonates treated with DEX, there was a lower incidence of intraventricular hemorrhage or periventricular leucomalacia (DEX, 13%; PL, 33%; P < .01). Reduction in the incidence of intraventricular hemorrhage or periventricular leucomalacia in DEX-treated neonates was particularly associated with exogenous human surfactant therapy (DEX+surfactant 10%; PL+surfactant 48%; P < .01). CONCLUSIONS: Prenatal DEX treatment combined with exogenous human surfactant therapy in preterm infants decreases pulmonary morbidity and cerebral complications, and increases survival without severe morbidity.
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