Operative characteristics
| Characteristics | All patients (n=14) |
| Timing after SAH (day) | |
| Median (IQR) | 1 (0.5) |
| Treated <48 hours after SAH | 11 |
| Extraventricular drain | |
| Before PED-Shield | 8 |
| After PED-Shield | 2 |
| Lumbar puncture | 1 |
| Aspirin loading | |
| Preoperative | 2 |
| Intraoperative | 10 |
| Postoperative | 2 |
| Heparin | |
| Intraoperative | 6 |
| Postoperative infusion | 5 |
| No PED-Shield | |
| Mean (SD) | 1.2 (0.7) |
| PED-Shield placement | |
| M1 ICA | 5 |
| VA | 4 |
| A1–2 | 2 |
| AComA | 1 |
| PICA | 1 |
| A2 | 1 |
| Coil embolization | 12 |
| Immediate Raymond-Roy | |
| 1 | 7 |
| 2 | 3 |
| 3 | 4 |
| Intraoperative complications | 0 |
AComA, anterior communicating artery; ICA, internal carotid artery; PICA, posterior inferior cerebellar artery; SAH, subarachnoid hemorrhage; VA, vertebral artery.