Comparison of neonatal problems in infants with acute and chronic types of twin-twin transfusion syndrome
| Neonatal problems | Acute (n=20) | Chronic (n=16) | |
| Mean gestation (weeks) | 33.1 | 33.1 | |
| Caesarean section | 3 (15) | 8 (50) | |
| Vaginal delivery | 17 (85) | 8 (50) | p<0.03 |
| Anaemia | 4 (20) | 5 (31) | |
| Polycythaemia | 5 (25) | 2 (13) | |
| Perinatal asphyxia | 5 (25) | 3 (19) | |
| Hypotension | 8 (40) | 1 (6) | p<0.025 |
| Respiratory distress | 9 (45) | 1 (6) | p<0.01 |
| Hypoglycaemia | 4 (20) | 4 (25) | |
| Hyperbilirubinaemia | 15 (75) | 7 (44) |
Values in parentheses are percentages.