Baseline clinical and imaging characteristicsa
| Variable | Pediatric (n = 122) | Adult (n = 198) | All (n = 320) | P Value |
|---|---|---|---|---|
| Clinical presentation | ||||
| Age (yr) | 9.8 ± 3.8 | 43.3 ± 15.7 | 30.8 ± 20.6 | <.001 |
| Female sex | 56 (45.9%) | 85 (42.9%) | 141 (44.1%) | .62 |
| GCS at baseline | 11.6 ± 3.9 | 12.4 ± 3.7 | 12.1 ± 3.8 | .09 |
| GCS score <9 | 33 (28%) | 38 (21.2%) | 71 (23.9%) | .09 |
| Imaging presentation | ||||
| Hemorrhage location | .45 | |||
| Supratentorial | 92 (76.7%) | 128 (72.7%) | 220 (74.3%) | |
| Infratentorial | 16 (13.3%) | 33 (18.8%) | 49 (16.6%) | |
| Other (SAH/IVH) | 12 (10%) | 15 (8.5%) | 27 (9.1%) | |
| Hemorrhage volume (mL)b | 19.8 ± 16.7 | 38.6 ± 35.5 | 30.6 ± 30.4 | <.001 |
| AVM characteristics | ||||
| Deep location | 67 (56.3%) | 42 (21.2%) | 109 (34.4%) | <.001 |
| Supratentorial location | 103 (86.6%) | 153 (77.3%) | 256 (80.8%) | .052 |
| Nidus max. diameter | 24.2 ± 14.3 | 18.9 ± 14.3 | 20.9 ± 14.5 | .002 |
| Spetzler-Martin grade | .7 | |||
| I | 24 (20.9%) | 49 (26.6%) | 73 (24.4%) | |
| II | 50 (43.5%) | 75 (40.8%) | 125 (41.8%) | |
| III | 27 (23.5%) | 44 (23.9%) | 71 (23.7%) | |
| IV | 10 (8.7%) | 11 (6%) | 21 (7%) | |
| V | 4 (3.5%) | 5 (2.7%) | 9 (3%) | |
| AVM-related aneurysms | ||||
| Nidal aneurysm | 18 (15.9%) | 42 (23.5%) | 60 (20.5%) | .03 |
| Prenidal arterial aneurysm | 3 (2.7%) | 32 (17.9%) | 35 (12%) | <.001 |
| AVM venous drainage | ||||
| Exclusively deep | 35 (29.7%) | 46 (25.8%) | 81 (27.4%) | .87 |
| Any deep drainage | 58 (49.2%) | 86 (48%) | 144 (48.5%) | .85 |
Note:—IVH indicates intraventricular hemorrhage; GCS, Glasgow Coma Scale; max., maximum.
a Data are presented as absolute count (percentage) and mean ± SD as appropriate.
↵b For 114 and 155 patients with intraparenchymal hemorrhages.