Figure 2: DUOPAP-mode and settings in a neonatal ventilator (Fabian, Acutronic, Switzerland) in the post-extubation phase of a preterm infant with RDS, DUOPAP uses infant flow generator for PEEP generation, double arrows show CPAP=PEEP (4 mbar) and PDUO=PIP ( 8 mbar, delta PIP = 4 mbar),giving a flow of 6 and 12,5 L/min respectively. The dotted line indicates the CPAP=PEEP level throughout the respiratory cycles.