Table 2. Patterns of Brain Injury.
| A) Preoperative Brain Injury | ||||||||
|---|---|---|---|---|---|---|---|---|
| Preoperative Injury | Stroke | White Matter Injury | Intraventricular Hemorrhage | |||||
| < 1/3 | 1/3-2/3 | Mild | Moderate | Severe | Grade 1 | Grade 2 | ||
| TGA1 (62) | 28 (45%) | 17 (27%) | 1 (2%) | 9 (15%) | 3 (5%) | 1 (2%) | 2 (3%) | 2 (2%) |
| SVP2 (30) | 12 (40%) | 5 (17%) | - | 3 (10%) | 4 (13%) | 1 (3%) | - | 3 (10%) |
| Total (92) | 40 (43%) * | 23 (25%) | 21 (23%) | 7 (8%) | ||||
| B) New Postoperative Brain Injury | ||||||||
| Postoperative Injury | Stroke | White Matter Injury | Intraventricular Hemorrhage | |||||
| < 1/3 | 1/3-2/3 | Mild | Moderate | Severe | Grade 3 | |||
| TGA1 (56) | 20 (36%) | 3 (5%) | - | 12 (21%) | 3 (5%) | 2 (4%) | - | |
| SVP2 (22) | 12 (54%) | 4 (18%) | 1 (5%) | 1 (4%) | 6 (27%) | - | 1 (4%) | |
| Total (78) | 32 (41%) | 8 (10%) | 24 (31%) | 1 (1%) | ||||
*
The incidence of preoperative brain injury is not significantly different by heart lesion (P=0.7)
1
TGA: Transposition of the great arteries
2
SVP: Single ventricle physiology