Internal sealing of acute aortic bleeding with a catheter-delivered liquid to solid embolic agent (Onyx)

Occasionally, standard stent grafts are not usable in emergency aortic bleeding, and custom-made stent grafts are not practical as a replacement. We describe a novel technique for the repair of such aneurysms by using the catheter-delivered liquid to solid embolic agent Onyx (Micro Therapeutics Inc., Irvine, CA). Two patients with ruptured aortic aneurysm, where endovascular or open repair was not considered as feasible, were treated by internal sealing of the aneurysm with Onyx, resulting in stoppage of bleeding and further expansion of the aneurysm-the plugging and sealing technique.