Characteristics of procedures with hemorrhagic complications
| Variablea | Overall (n = 92) | AP (n = 44) | NAP (n = 48) | P Value |
|---|---|---|---|---|
| AVM location | ||||
| Cortical | 77 (84) | 41 (93) | 36 (75) | <.041 |
| Deep | 11 (12) | 3 (7) | 8 (17) | |
| Infratentorial | 4 (4) | 0 (0) | 4 (8) | |
| Eloquent | 53 (58) | 17 (39) | 36 (75) | <.001 |
| Type of HC | ||||
| Intraparenchymal hemorrhage | 46 (50) | 12 (27) | 34 (71) | <.001 |
| Subarachnoid hemorrhage | 35 (38) | 31 (71) | 4 (8) | |
| Intraventricular hemorrhage | 11 (12) | 1 (1) | 10 (21) | |
| Timing of rupture | ||||
| Hemorrhage during procedure | 52 (59) | 43 (98) | 9 (18) | <.001 |
| Delay between procedure and hemorrhagic events, hours (range) | 17.2 (0–240) | 0.05 (0–2) | 34.4 (0–240) | <.001 |
| Craniotomy for hematoma evacuation, decompressive craniotomy or EVD | 15 (16) | 3 (7) | 12 (25) | <.019 |
Note:—EVD indicates external ventricular drainage.
↵a No. (%), mean ± SD or range.