Table 2.
Operative and Postoperative Patient Data
| Parameter | Single Ventricle, n=36 | Two Ventricle, n=32 | P value |
|---|---|---|---|
| Age (days) | 7 (5–10.5) | 8 (5.5–13.5) | 0.33 |
| Weight (kg) | 3.02 ± 0.36 | 3.30 ± 0.52 | 0.011* |
| Operation: | |||
| Norwood Stage I Palliation | 35 | NA | |
| ASO, AAA, PAB | 1 | NA | |
| ASO | 0 | 21 | NA |
| Truncus arteriosus repair | 0 | 5 | NA |
| AAA, VSD repair | 0 | 6 | NA |
| Preoperative mechanical ventilation (no., %) | 7 (19) | 6(19) | 0.81 |
| CPB time (min) | 216 ± 58 | 220 ± 68 | 0.77 |
| AoXcl time (min) | 103 ± 36 | 128 ± 44 | 0.01* |
| Lowest temperature (°C) | 17.5 ± 0.7 | 23.5 ± 3.6 | <0.001* |
| Hematocrit during hypothermia (%) | 30.2 ± 2.2 | 31.2 ± 1.7 | 0.07 |
| DHCA time (min) | 13 ± 8 (30 pts) | 11 ± 5 (4 pts) | 0.60 |
| ACP time (min) | 76 ± 20 (36 pts) | 27 ± 17 (7 pts) | <0.001* |
| ACP flow rates (ml/kg/min) | 56 ± 10 (36 pts) | 63 ± 13 (7 pts) | 0.08 |
| Intraoperative rSO2 minutes <45% | 45 ± 49 | 15 ± 31 | 0.004 |
| Intraoperative rSO2 minutes ≥45% | 410 ± 105 | 396 ± 117 | 0.60 |
| Postoperative rSO2 minutes <45% | 287 ± 408 | 1 ± 3 | <0.001 |
| Postoperative rSO2 minutes ≥45% | 3779 ± 582 | 4136 ± 326 | 0.003 |
Data expressed as means ± SD or median (25th–75th percentile interquartile range);
*
p<0.05 by T-test. SV, single ventricle; 2V, two ventricle; ASO, arterial switch operation; AAA, aortic arch advancement; PAB, pulmonary artery banding; CPB, cardiopulmonary bypass; AoXcl, aortic crossclamp time; DHCA, deep hypothermic circulatory arrest; ACP, antegrade cerebral perfusion; rSO2, regional cerebral oxygen saturation.