Table 1: Main Characteristics of the Studied Population ().

Birth weight (g) Gestational age (weeks) CRIB SNAPPE Mechanical ventilation 61.9% Persistence of Ductus Arteriosus 55.5% Use of Dopamine 34.5% Use of Dobutamine 37% Early sepsis 23.5% Deaths 6.7%

VPP = Ventilation with positive pressure.