Complications of preoperative embolization of cerebral arteriovenous malformations with Onyx
| Complication | No. of Procedures (%) | No. of Patients (%) |
|---|---|---|
| Death | 0 (0) | 0 (0) |
| Permanent neurological deficit (> 6 mo) | 5 (6.1) | 5 (12.2) |
| Transient neurological deficit (< 48 h) | 2 (2.4) | 2 (4.8) |
| Technical complication without deficit | 16 (19.5) | 15 (36.6) |
| Asymptomatic small infarction | 3 (3.7) | 3 (7.3) |
| Perforation | 9 (11.0) | 9 (22.0) |
| Catheter entrapment | 4 (4.9) | 4 (9.8) |
| No complication | 59 (72.0) | 19 (46.3) |
| Total | 82 (100) | 41 (100) |