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Bronchopulmonary dysplasia, a major morbidity of extreme prematurity (<28 weeks gestation), has been associated with low cortisol concentrations after birth. However, previous trials of early preventive hydrocortisone therapy were unsuccessful and linked to increased rates of intestinal perforation.
To further examine the efficacy and safety of this treatment strategy, French investigators conducted a multicenter, prospective, randomized, double-blind trial (PREMILOC), in which 523 extremely preterm infants (<28 weeks gestation) received placebo or hydrocortisone (1 mg/kg/day for 7 days followed by 0.5 mg/kg/day for 3 days). Ibuprofen treatment for patent ductus arteriosus was excluded during the first 24 hours of life. Financial and technic…