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Respiratory distress syndrome (RDS), requiring mechanical ventilation and exogenous surfactant treatment, and patent ductus arteriosus (PDA), are common co-morbidities in very premature infants. The effects of intra-tracheal surfactant administration on the cardiovascular and pulmonary systems in very premature infants with RDS and PDAs are not well characterized. We evaluated the effects of poractant alfa and beractant, surfactants with different rapidity of onset and duration of action, in very premature infants with RDS. To assess whether there were differences in PDA hemodynamics in very premature infants with RDS treated with poractant alfa and beractant during the first week of life and to assess whether poractant alfa or beractant had a direct effect on PDAs and PDA hemodynamics following the second dose of surfactant.

Patent ductus arteriosus hemodynamics in very premature infants treated with poractant alfa or beractant for respiratory distress syndrome