| Type of surgery | Finer et al. (1993) | Gavilanes et al. (1997) | Fanning et al. (1998) | Presented series |
| Abdominal, bowel, and gastric | 40 | 12 | 5 | 17 emergency + 2 elective |
| Peritoneal drain | 0 | 0 | 4 | 0 |
| CDH repair | 10 | 2 | 2 | 0 |
| Omphalocele, Gastroschisis | 2 | 0 | 0 | 0 |
| Esophageal atresia/TEF | 1 TEF | 0 | 2 TEF + gastrostomy | 0 |
| Inguinal hernia | 2 | 0 | 1 | 0 |
| Orchidopexy bilaterally | 10 | 0 | 0 | 0 |
| CSF-reservoir | 0 | 14 | 0 | 0 |
| PDA-Ligation | 3 | 16 | 0 | 0 |
| Miscellaneous | 13 | 1 | 4 | 2 |