P113 Sinus protection- a novel approach in treating Dural AV Fistulas transarterially

<h3>Introduction</h3> Embolization of Dural AV fistulas with multiple feeders draining to a large venous sinus which is functional is a problem faced by Neurointerventionalists. <h3>Aim of Study</h3> We want to describe a case of lateral dural av fistula supplied by occipital, ascending pharyngeal and vertebral artery draining to transverse sinus. <h3>Methods</h3> A 6F guiding catheter was put in th external carotid artery ,8*80mm COPERNIC RC baloon was placed in rt transverse sigmoid sinus.Transarterial onyx embolization was done through a marathon mcrocatheter selectively placed in occipetal artery feeders. Complete embolization was done with onyx injection through a single feeder. <h3>Results</h3> Complete cure of fistula was done using transarterial onyx embolization with preservation of transverse sinus using complaint baloon like Copernic. <h3>Conclusion</h3> Preserving a normal drainining sinus of the brain is important to avoid venous thrombosis and venous hypertension related hemorrhagic complications in trwating a dural av fistula. <h3>Disclosure of Interest</h3> no.