Detection and Treatment Guide Updated 2017 Detection-and-Treatment-2017 - Page 22

Liquid Agents The liquid agent that is currently available for aneurysm treatment in the United States is Onyx HD 500, which solidifies on contact with blood. Using an endovascular approach like that used in coiling (via a catheter in an artery in the groin), the doctor injects Onyx HD 500 via a microcatheter into the aneurysm sac, where it solidifies, causing clotting and obliteration of the aneurysm. During the procedure, a balloon is placed across the neck of the aneurysm and inflated temporarily to prevent the Onyx HD 500 from leaking outside the aneurysm sac. Onyx HD 500 inserted. 21