Endovascular Aneurysm Sealing System for Treating Abdominal Aortic Aneurysms: Early Outcomes from a Single Center
Thiti Chanmayka MD*, Anucha Ahooja MD**, Chalach Mitprachapranee MD*, Chawalit Wongbhuddha MD*, Sompop Prathanee MD*, Chusak Kuptarnond MD*
Affiliation : * Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand ** Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
Background : Evidences reveal relative benefits of Endovascular aneurysm repair (EVAR) has declined over time, largely due
to higher rates of re-intervention. Endovascular aneurysm sealing system (EVAS) has been proposed as a novel treatment for
abdominal aortic aneurysms by excluding the sac with sealing at both the proximal and distal landing zones. Global
experience with this novel treatment is limited. Therefore, there is a need to examine clinical outcomes after EVAS to provide
appropriate treatment of abdominal aortic aneurysm.
Objective : To present the feasibility for treatment of abdominal aortic aneurysm by EVAS.
Material and Method: Eight patients with abdominal aortic aneurysm were treated with EVAS between January 2016 and
November 2016. Data of demographics-, aneurysm morphology-, early outcomes-, endoleaks and other complications were
included and analyzed. Computed tomographic angiography was used for postoperative imaging.
Results : The mean age of the participating patients was 71+6 years and 75% were male. Aneurysm neck length of <10 mm
was 25% (n = 2), neck angulation was 44.26+22.5°, aneurysm diameter was 63.2+22.2 mm. There was one death within 30
days. The incidence of Type 1 endoleak within 30 days was one case. There were no Type 2 or Type 3 endoleaks.
Conclusion : The use of EVAS treating abdominal aortic aneurysm is feasible with acceptable early outcomes. EVAS may be
applicable to a broader range of morphology compared with conventional EVAR. Eventually EVAS needs long-term follow-
up.
Keywords : Abdominal aortic aneurysm, endovascular aneurysm sealing system, endobags, endoleak, chimney, endovascular aneurysm repair
