Cook Medical has reported thrombus formation with or without occlusion of the Zenith Alpha Spiral-Z®. The purpose of this study is to measure the extent of thrombus formation and occlusion of these stent graft limbs in patients with aortic aneurysms treated at St. Olavs Hospital in 2017, 2018 and 2019. Information is collected from the Norwegian registry for vascular surgery (NORKAR), electronic patient journal and the picture archiving and communication system (PACS). The total number of included patients is estimated to be approximately 100.
The purpose of this study is to assess the extent of thrombosis in the Zenith Alpha Spiral-Z® stent graft.