Surfactant Application During Spontaneous Breathing With Continuous Positive Airway Pressure (CPAP) in Premature Infants < 27 Weeks (NINSAPP)

80 % of extremely preterm infants with a gestational age of less than 27 completed weeks suffer from severe idiopathic respiratory distress syndrome (IRDS). They are still at high risk of mortality and long term morbidity especially of the lung and the brain. At least death and chronic lung disease (CLD) are related to the need and the duration of mechanical ventilation. Continuous positive airway pressure (CPAP) has been shown to be effective to avoid mechanical ventilation in the treatment of IRDS but it often fails in the most immature infants. Early or prophylactic surfactant application is effective in the treatment of IRDS and is the only causal therapy, but it is usually related to intubation and mechanical ventilation that should be avoided.Therefore to overcome the dilemma between need for mechanical ventilation with surfactant administration on the one hand and surfactant withholding with the use of CPAP on the other hand, a strategy was developed to administer surfactant during spontaneous breathing with CPAP (1). In the proposed prospective randomised controlled trial this strategy shall be compared with the recent gold standard in the therapy of extremely preterm infants with IRDS, that is intubation, mechanical ventilation and surfactant administration. Based on the results of a feasibility (1) study and some clinical observations it is hypothesised that the new approach is superior in avoidance of death and chronic lung disease compared to the recent gold standard.