Baseline demographics, clinical, and radiologic characteristics of the patientsa
| Characteristics | |
|---|---|
| Age (median) (range, IQR) (yr) | 60 (38–88, 56–69) |
| Female sex | 27 (54) |
| Hunt and Hess scale | |
| 1 | 5 (10) |
| 2 | 12 (24) |
| 3 | 8 (16) |
| 4 | 17 (34) |
| 5 | 8 (16) |
| Hydrocephalus | 47 (94) |
| EVD placement | 38 (76) |
| Craniectomy | 4 (8) |
| Modified Fisher scale | |
| 1 | 1 (2) |
| 2 | 8 (16) |
| 3 | 2 (4) |
| 4 | 39 (78) |
| Treatment of culprit vascular lesion | |
| Endovascular | 39 (78) |
| Surgical | 9 (18) |
| Noneb | 2 (4) |
| >1 Lesion treatedc | 3 (6) |
| Ruptured aneurysm/lesion locationd | |
| Anterior communicating artery | 19 (38) |
| Posterior communicating artery | 8 (16) |
| Middle cerebral artery bifurcation | 6 (12) |
| PICA | 6 (12) |
| Carotid ophthalmic | 3 (6) |
| Pericallosal | 2 (4) |
| Basilar tip | 1 (2) |
| Carotid terminus | 1 (2) |
| Posterior cerebral artery (P1) | 1 (2) |
| Vertebral artery dissection | 1 (2) |
| Noneb | 2 (4) |
Note:—IQR indicates interquartile range; PICA, posterior inferior cerebellar artery; EVD, external ventricular drain.
↵a Data in parentheses are percentages except where indicated.
↵b No culprit lesion identified on repeat DSA examinations.
↵c Three aneurysms, 2 treated by endovascular coiling, and 1, by surgical clipping.
↵d In case of >1 treated aneurysm, this reflects the most likely source of hemorrhage.