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ULTIMO FASCICOLOINTERNATIONAL ANGIOLOGY

Rivista di Angiologia


Official Journal of the International Union of Angiology, the International Union of Phlebology and the Central European Vascular Forum
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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International Angiology 2016 Aug 30

Two-year outcome of the Endurant stent graft for endovascular abdominal aortic repair in Japanese patients: incidence of endoleak and aneurysm sac shrinkage

Toshiya NISHIBE 1, Toru IWAHASHI 1, Kentaro KAMIYA 1, Kayo TOGUCHI 1, Keita MARUNO 1, Toshiki FUJIYOSHI 1, Yukio MUROMACHI 1, Shun SUZUKI 1, Jun KOIZUMI 2, Hitoshi OGINO 1

1 Department of Cardiovascular Surgery, Tokyo Medical University, Tokyo, Japan; 2 Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan

BACKGROUND: We aimed to review 50 consecutive Japanese abdominal aortic aneurysm (AAA) and common iliac aneurysm (CIAA) patients to evaluate the 2-year outcomes, particularly endoleak and aneurysm sac shrinkage, of the Endurant stent graft.
METHODS: Between June 2012 and January 2014, 50 consecutive Japanese AAA and CIAA patients underwent EVAR with the Endurant stent graft. Clinical outcomes of overall survival, aneurysm-related survival, and secondary intervention-free survival were analyzed; endoleaks and aneurysm sac changes were also evaluated.
RESULTS: The 2-year Kaplan-Meier estimates for overall survival, aneurysm-related survival, and secondary intervention-free survival were 85.4%, 97.7% with one device-related death, and 84.9%, respectively. Type I, II, and III endoleaks at any one point (all comers) after EVAR were detected in 2 (4%), 6 (12%), and 3 (6%) patients, respectively, whereas type IV endoleak was detected in 19 (38%) patients. The percentage of patients with significant sac shrinkage was only 19% (7/37) of the patients at 2 years. Multivariate analysis detected hypertension as a significant factor affecting aneurysm sac shrinkage (OR: 0.09, 95% CI: 0.001-0.99, P=0.049).
CONCLUSIONS: The Endurant stent graft has demonstrated consistently successful clinical performance in Japanese patients for 2 years. However, the incidence of type IV endoleak was high, while the percentage of significant sac shrinkage was low. Careful and longer follow-up is required to determine the durability of the Endurant stent graft in Japanese patients.

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