Table 3.
Morbidities and mortality.
| Gestational age | 22 weeks | 23 weeks | 24 weeks | |||
|---|---|---|---|---|---|---|
| Overall (N = 329) |
Survived (N = 58) |
Overall (N = 2690) |
Survived (N = 1116) |
Overall (N = 4559) |
Survived (N = 2914) |
|
| PDA ligation (%) | 7 | 26 | 19 | 38 | 20 | 27 |
| BPD (%) | 14 | 77 | 34 | 80 | 48 | 73 |
| NEC medical (%) | 3 | 7 | 6 | 8 | 6 | 6 |
| NEC surgical (%) | 2 | 2 | 4 | 4 | 5 | 3 |
| IVH (grade III/ IV) (%) |
23 | 28 | 24 | 19 | 18 | 13 |
| Severe ROP (%) | 20 | 24 | 21 | 22 | 16 | 16 |
| Gastrostomy tube (%) |
2 | 9 | 5 | 11 | 5 | 8 |
| Died (%) | 82 | - | 59 | - | 36 | - |
| Death or any severe morbidity (%)a |
98 | 91 | 95 | 89 | 88 | 81 |
BPD bronchopulmonary dysplasia, IVH intraventricular hemorrhage, NEC necrotizing enterocolitis, PDA patent ductus arteriosus, ROP retinopathy of prematurity.
a
Severe morbidity included BPD, IVH grade III or IV, ligation of PDA, severe ROP and NEC.