Arteriovenous malformation (AVM) repair is a surgical procedure to treat abnormal tangles of blood vessels where arteries and veins are connected directly, bypassing the normal capillary system. AVMs can cause bleeding, stroke, or seizures if left untreated, so repair is critical to prevent these complications.

The procedure involves removing or blocking the abnormal blood vessels, which may be done through surgery, endovascular techniques, or a combination of both. Repairing AVMs helps restore normal blood flow, reduce the risk of bleeding, and improve long-term neurological outcomes for patients.