Table 3.
Surgical strategies, indication, and timing of repeat revascularization.
| Second surgical strategy | |
| STA/MCA (frontal branch) | 4 (26%) |
| ECA/MCA (RAG interposition) | 9 (60%) |
| ECA/MCA (SV interposition) | 1 (67%) |
| OA/MCA | 1 (67%) |
| Reason for revision | |
| Symptomatic bypass occlusion on DSA | 12 (80%) |
| Symptomatic patent bypass | 1 (67%) |
| Intraoperative vasospasm (surgery not completed) | 1 (67%) |
| Secondary P2 occlusion | 1 (67%) |
| Time between initial surgery and revision | |
| 0–1 Year | 6 (40%) |
| 1–3 Years | 3 (20%) |
| 3–6 Years | 3 (20%) |
| >6 Years | 3 (20%) |
Summary of second surgical strategies, reason for repeat revascularization, and time between initial surgery and repeat revascularization.
STA-MCA, superficial temporal artery to middle cerebral artery; ECA-MCA, external carotid artery to middle cerebral artery; RAG, radial artery graft; SV, saphenous vein; OA-MCA, occipital artery to middle cerebral artery.