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Direct revascularization (STA-MCA bypass) involves use of a branch of a scalp artery (STA) for direct anastomosis (connection) to a branch of the brain artery (MCA) on the outer surface of the brain. This procedure benefits patients by providing an immediate improvement in blood supply to the brain. It's also known as an extracranial to intracranial bypass graft (EC-IC bypass). By virtue of doing the STA-MCA bypass and laying the STA directly on the brain surface, an indirect revascularization is achieved as well. Through enlargement of the STA and increased indirect revascularization, blood flow is expected to continue improving over a period of several months.
In the series of patients who have had direct bypass grafts at The Moyamoya Center, results indicate a greater than 95 %graft patency with excellent long term outcomes. Patients are typically hospitalized for 3-5 days, with overall recovery taking between 2 - 6 weeks before returning to all pre-surgery activities. This procedure is our first line recommendation in patients who are eligible. Many children under 5 often don't have arteries large enough to bypass, and may not be candidates for this particular surgery.
Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you may have access to the latest, advanced clinical trials.
Open trials refer to studies currently accepting participants. Closed trials are not currently enrolling, but may open in the future.
Moyamoya CenterThe Stanford Moyamoya Center is the largest moyamoya referral center in the world. Our experienced professionals work hard to ensure our patients live full, healthy lives.
Stanford Neuroscience Health Center213 Quarry Road
Palo Alto, CA 94304