title: Mid-term Results of Endovascular Treatment for Infrarenal Aortic Stenosis and Occlusion.
abstract: BACKGROUND
  Focal stenosis or occlusion of the infrarenal aorta is rare, and treatment is usually conventional bypass or endarterectomy. However, endovascular treatment has advanced in recent years. The purpose of this retrospective study is to report the results of primary stenting for focal infrarenal aortic occlusive disease and clarify the usefulness of endovascular treatment.
  
  
  METHODS
  This study includes 6 consecutive patients (3 men, 3 women; mean age, 59.3 years) with infrarenal aortic stenosis or occlusion who underwent endovascular intervention at our hospital between April 2009 and February 2014. All patients had bilateral intermittent claudication. The mean preoperative ankle-brachial index (ABI) showed a slight to moderate decrease: right 0.668 and left 0.636. The mean lesion site length was 12.5 mm, the percent stenosis was 90.7%, and calcification was present in 3 patients. Primary stenting was performed in all patients. The stent selected was generally a self-expanding stent (SES). For patients with severe calcification, the stent selected was a balloon-expandable stent (BES).
  
  
  RESULTS
  Four patients received an SES and two patients received a BES. The technical success rate was 100%, no complications occurred, and the mean pressure gradient disappeared or decreased. Symptoms resolved in all patients and the postoperative ABI improved: right 0.923 and left 0.968. During a mean follow-up period of 27 months, there were no recurrent symptoms and no restenosis on CT angiography.
  
  
  CONCLUSIONS
  Endovascular treatment should be considered as a first line treatment for focal infrarenal aortic stenosis and occlusion.
authors.forename: Etsuji
authors.initials: E
authors.lastname: Sohgawa
authors.forename: Yukimasa
authors.initials: Y
authors.lastname: Sakai
authors.forename: Mineyoshi
authors.initials: M
authors.lastname: Nango
authors.forename: Hisayuki
authors.initials: H
authors.lastname: Cho
authors.forename: Atsushi
authors.initials: A
authors.lastname: Jogo
authors.forename: Shinichi
authors.initials: S
authors.lastname: Hamamoto
authors.forename: Akira
authors.initials: A
authors.lastname: Yamamoto
authors.forename: Yukio
authors.initials: Y
authors.lastname: Miki
mesh_terms: D000328:Adult; D000368:Aged; D055109:Ankle Brachial Index; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D001018:Aortic Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D001027:Aortography / Q000379:methods; D001157:Arterial Occlusive Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation; D003251:Constriction, Pathologic; D057510:Endovascular Procedures / Q000295:instrumentation; D005240:Feasibility Studies; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D011474:Prosthesis Design; D012189:Retrospective Studies; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D061205:Vascular Calcification / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*