Complications and death
| Clip | Coil | |||||||||
| Total | VS | EVD | Shunt | Death | Total | VS | EVD | Shunt | Death | |
| I–II | 16 | 3 | 4 | 0 | 1 | 13 | 5 | 0 | 0 | 0 |
| III | 13 | 3 | 14 | 2 | 4 | 8 | 0 | 6 | 4 | 0 |
| IV–V | 6 | 1 | 6 | 1 | 4 | 4 | 2 | 2 | 0 | 1 |
Table organized according to Hunt and Hess grades.
EVD, extravascular drainage; VS, vasospasm.