Procedure- and disease-related adverse events*
| Randomized Treatment | ||||
|---|---|---|---|---|
| Hydrogel | Bare Platinum | |||
| No. | % | No. | % | |
| Procedural aneurysm rupture | 9 | 3.6 | 8 | 3.2 |
| Coil migration | 15 | 6.0 | 10 | 4.0 |
| Parent artery occlusion | 4 | 1.6 | 8 | 3.2 |
| Thromboembolic complication | 14 | 5.6 | 25 | 10.0 |
| Other procedure-related adverse events | 8 | 3.2 | 9 | 3.6 |
| Intra-arterial thrombolysis used | 20 | 8.0 | 26 | 10.4 |
| Neurologic deterioration immediately after coiling | 18 | 7.2 | 17 | 6.8 |
| Rebleed before discharge | 0 | 0 | 2 | 0.8 |
| Delayed ischemic neurologic deficit | 34 | 13.7 | 38 | 15.2 |
| Cerebral hematoma | 9 | 3.6 | 11 | 4.4 |
| Cardiorespiratory | 11 | 4.4 | 13 | 5.2 |
| Other disease-related† | 13 | 5.2 | 9 | 3.6 |
* Events, especially procedural ones, may not have resulted in clinical sequelae.
† See “Results” for explanatory notes.