[STA-ACA anastomosis with interposed vein graft; a case report]

Area of Science:

• Neurosurgery
• Vascular Surgery
• Cerebrovascular Disease

Background:

• Extracranial-intracranial bypass surgery is a treatment for cerebrovascular disease.
• Saphenous vein grafts have been used in bypass procedures, including coronary and extracranial-intracranial artery bypass.
• Superficial temporal artery (STA)-anterior cerebral artery (ACA) anastomosis with an interposed vein graft is indicated when the STA is too short for direct anastomosis.

Observation:

• The study reports on two patients with advanced occlusive cerebrovascular disease in the ACA treated with saphenous vein grafts.
• Technical proficiency, including graft handling and vessel approximation, is crucial for successful revascularization.
• Anastomosis to the proximal ACA using a vein graft necessitates prolonged circulatory interruption due to size discrepancy.

Findings:

• The study suggests that direct anastomosis to a superficial ACA branch distal to the interhemispheric fissure is preferable to using a vein graft.
• Vein grafts are recommended only when the superficial temporal artery (STA) is unsuitable for direct anastomosis.

Implications:

• These findings may influence surgical decision-making in treating complex ACA occlusive disease.
• Alternative surgical techniques should be considered to optimize outcomes and minimize risks associated with vein grafting in this context.
• Further research could explore the long-term efficacy and safety of different revascularization strategies for ACA disease.