Data on all infants subdivided by diagnosis
| Diagnosis | n (%) | Born at term | Prenatal diagnosis | Death <2 m without cardiac intervention | Cardiac surgery <2 m | Catheter intervention <2 m | Postnatal age at surgery/catheter intervention Median (range) | PGE1 | Postoperative mortality <30 days | Total deaths until last follow-up | Preoperative enteral feeds >45 mL/kg | Preoperative full feeds | NEC |
| CoA | 126 (27.5) | 110 | 13 | 2 | 124 | 0 | 9 (2–61) | 102 | 1 | 4 | 123 | 99 | 1 |
| TGA | 103 (22.5) | 102 | 27 | 0 | 102 | 1 | 7 (1–57) | 99 | 1 | 2 | 102 | 102 | 1 |
| HLHS | 47 (10.3) | 41 | 34 | 7 | 40 | 0 | 6 (2–16) | 45 | 6 | 24 | 46 | 45 | 0 |
| PA | 34 (7.4) | 27 | 13 | 0 | 26 | 8 | 7 (2–42) | 32 | 1 | 5 | 33 | 33 | 0 |
| PS | 33 (7.2) | 31 | 1 | 0 | 2 | 31 | 8 (1–56) | 16 | 0 | 0 | 33 | 28 | 0 |
| AS | 32 (7.0) | 27 | 1 | 0 | 31 | 1 | 8 (0–61) | 19 | 2 | 3 | 28 | 24 | 0 |
| ToF | 23 (5.0) | 19 | 7 | 1 | 17 | 5 | 13 (2–61) | 12 | 0 | 2 | 22 | 19 | 2 |
| DORV | 19 (4.1) | 13 | 10 | 1 | 16 | 2 | 22 (4–60) | 14 | 1 | 2 | 17 | 15 | 0 |
| DILV | 14 (3.1) | 13 | 10 | 0 | 14 | 0 | 6 (4–60) | 12 | 0 | 0 | 14 | 14 | 0 |
| Truncus | 14 (3.1) | 13 | 5 | 0 | 14 | 0 | 9 (3–46) | 3 | 0 | 2 | 13 | 13 | 0 |
| TAPVR | 6 (1.3) | 5 | 1 | 1 | 5 | 0 | (5–56) | 1 | 0 | 1 | 6 | 5 | 0 |
| MS | 3 (0.6) | 3 | 2 | 0 | 3 | 0 | 6 (3–11) | 2 | 0 | 0 | 3 | 3 | 0 |
| HRV | 2 (0.4) | 2 | 2 | 0 | 2 | 0 | (4–8) | 2 | 0 | 0 | 2 | 2 | 0 |
| Ebstein | 1 (0.2) | 1 | 1 | 0 | 1 | 0 | 5 | 1 | 0 | 1 | 1 | 1 | 0 |
| IAA | 1 (0.2) | 1 | 0 | 0 | 1 | 0 | 8 | 1 | 0 | 0 | 1 | 1 | 0 |
| TA | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Total | 458 | 408 | 127 | 12 | 398 | 48 | 361 | 12 | 46 | 444 | 404 | 4 |
AS, aortic stenosis; CoA, coarctation of the aorta; DILV, double inlet left ventricle; DORV, double outlet right ventricle; Ebstein, Ebstein’s anomaly; HLHS, hypoplastic left heart syndrome; HRV, hypoplastic right ventricle; IAA, interrupted aortic arch; MS, mitral stenosis; NEC, necrotising enterocolitis; PA, pulmonary atresia; PGE1, prostaglandin E1; PS, pulmonary stenosis; TA, tricuspid atresia; TAPVR, total anomalous pulmonary venous return; TGA, transposition of the great arteries; ToF, tetralogy of Fallot; Truncus, truncus arteriosus.