Dural Arteriovenous Fistula (DAVF) Embolization
Dural arteriovenous fistula (DAVF) embolization is a minimally invasive endovascular procedure used to treat an abnormal connection between arteries and veins within the dura, the protective covering of the brain and spinal cord. Depending on its location and blood-flow pattern, a DAVF may cause headaches, pulsatile tinnitus, vision problems, neurological symptoms, or, in some cases, bleeding.
How Is DAVF Embolization Performed?
During DAVF embolization, an interventional neurospecialist or neurointerventional team guides a thin catheter through a blood vessel to the fistula. Special embolic materials are then delivered to block the abnormal blood flow and reduce the risk associated with the fistula. Cerebral angiography is typically used to identify the fistula and plan treatment precisely.
Who May Need This Treatment?
Treatment may be recommended when a DAVF has features associated with neurological complications or intracranial bleeding. The appropriate approach depends on the fistula's location, venous drainage pattern, symptoms, and overall health.
Benefits and Recovery
Potential benefits include treating the abnormal vascular connection without conventional open brain surgery and reducing abnormal blood flow. Recovery varies according to the complexity of the procedure and the patient's condition. Your medical team will explain follow-up imaging, activity restrictions, and warning signs to watch for after treatment.
Why Specialized Care Matters
DAVF treatment requires detailed vascular imaging and careful treatment planning because fistulas can have complex arterial and venous anatomy. Patients should discuss the expected benefits, possible risks, alternatives, and follow-up requirements with a qualified neurovascular specialist.