Table 2.
Hospital Characteristics at Neonatal Operation
| ISVMP (n=166) | Historical (n=168) | P Value | |
|---|---|---|---|
| Age at first operation, d | 4 (3–6) | 4 (2–6) | 0.01 |
| Norwood operation, n | 116 | 131 | 0.13 |
| BT shunt | 74 (64) | 104 (79) | 0.006 |
| RV‐PA shunt | 42 (36) | 27 (21) | |
| BT shunt only | 50 | 37 | 0.28 |
| Cardiopulmonary bypass time, min | 76 (31–90) | 80 (72–106) | 0.003 |
| Mechanical ventilation, d | 1 (1–3) | 2 (2–4) | 0.1 |
| CPR | 10 (6.3) | 16 (10) | 0.2 |
| ECMO | 6 (3.8) | 9 (5.4) | 0.5 |
| Arrhythmias | 49 (31) | 59 (36) | 0.29 |
| Length of hospital stay, d | 22 (16–35) | 24 (17–38) | 0.6 |
Counts are expressed as n (%), continuous variables are expressed as median (interquartile range). Medians were compared using Student t or Wilcoxon–Mann–Whitney U tests for continuous variables, as appropriate. Categorical variables were compared using the χ2 or Fisher exact test. BT indicates Blalock–Taussig shunt; CPR, cardiopulmonary resuscitation; ECMO, extracorporeal membrane oxygenation; ISVMP, infant single‐ventricle management and monitoring program; RV‐PA, right ventricle to pulmonary artery.