Effects of Bolus Surfactant Therapy on Peripheral Perfusion Index and Tissue Carbon Monoxide

Preparations of poractantalfa (Curosurf, 200 mg/kg) (n = 15) or beractant (Survanta, 100 mg/kg) (n = 15) were administered in a consecutive randomized manner within the first 6 h of life. During the procedure, the tube was disconnected from the ventilator. The patient's head was held in a neutral position and surfactant preparations were given in two bolus fractions. Manual ventilation was given for 2 min after each dose. After the second dose, the endotracheal tube was reconnected and the physician (D.T.) observed the infant for 30-60 s until the oxygen saturation reached \> 90% on pulse oximetry. Thereafter, the peak inspiratory pressure of the 6 ventilator was reduced by 1-2 mmH2O.