NSIPPV
DeviceIn N-SIPPV, the physician will set : an initial PEEP of 4-6 cmH20; a peak inspiratory pressure (PIP) of 15-20 cmH2O ; an inspiratory time (IT) of 0.3-0.4 seconds; a flow rate of 6-10 L/min and a respiratory rate (RR) of 40 bpm with the lowest FiO2 to maintain a oxygen saturation (SpO2) of 88-93%. Weaning from N-SIPPV will be performed with a reduction of the RR to 15 bpm with a PIP of 10-15 cmH2O and PEEP of 4 cmH2O and will be stopped when the baby will not show signs of RDS and with a fraction of inspired oxygen (FiO2)< 0.3.