Abstract
We introduce our technique to treat dural arteriovenous fistulae (dAVFe) under sinus balloon protection. The Kaneka Shoryu 7 × 7 mm balloon was used for sinus occlusion. Initially, the balloon was inflated slowly using 1.5-2.0 mL of saline on the table. A 6F guiding catheter was navigated into the proximal portion of the lesion from the jugular vein of the affected side. The balloon catheter was introduced to the point occluding the shunt. The balloon was temporarily inflated to determine the occlusion point without occluding the outlet of the vein of Labbe. ONYX injection was started from the microcatheter located at just proximal to the shunt point under sinus balloon occlusion. ONYX penetrated the feeding arteries in an antegrade and retrograde manner. After the penetration of ONYX into each feeding artery, the inflated balloon was temporarily deflated to examine the residual shunt. If a small shunt remained, the balloon was inflated again and ONYX injection was continued. To cure dAVF, the location of the balloon is important. The guiding catheter should be placed just proximal to the shunt and the balloon catheter should be gently pulled to stabilize the balloon position.
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