Results: In the BPD group, gestational age and birth weight (27.8 ± 1.6 vs 28.9 ± 1.8 weeks; 1068.3 ± 259.4 vs 1275, 7 ± 326.7g) were lower; rate of anemia requiring transfusion (95.8% vs 33.3%), of pneumonia (100% vs 73.3%); of PDA (75% vs 26.7%); of pulmonary hypertension (50% vs 8.3%); and of invasive mechanical ventilation (91.7% vs 66.7%) were higher; rate of NCPAP support (58.3% vs 98.3%) was lower; duration of NCPAP support was shorter (5.5 (0; 31), 5) vs 18.5 (11; 29.5) days); duration of invasive mechanical ventilation (43.5 (22; 56.5) vs 2.5 (0; 6) days) and of Fi >21% (45.8 ± 11.2 vs 9.7) ±8.6 days) were both longer.