title: External carotid-to-subclavian artery bypass in stent grafting of thoracic aorta.
abstract: BACKGROUND
  A bypass between the left common carotid artery and the left subclavian artery has been made in some patients undergoing thoracic endovascular aortic repair that covers the orifice of the left subclavian artery. However, complications associated with temporary occlusion of the left common carotid artery are reportedly not uncommon.
  
  
  METHODS
  Between January 2009 and September 2011, left external carotid-to-left subclavian artery bypass was made using a polytetrafluoroethylene graft in 15 patients undergoing a thoracic endovascular aortic repair that covered the orifice of the left subclavian artery. Adverse effects associated with the procedure were assessed, and patency of the bypass graft was determined by contrast-enhanced computed tomography before discharge and at least once during follow-up.
  
  
  RESULTS
  All patients were discharged without any brain complications. All 15 bypass grafts were patent prior to discharge and during the follow-up period. One patient suffered temporary left recurrent laryngeal nerve palsy postoperatively. No other sequelae were associated with left external carotid-to-left subclavian artery bypass.
  
  
  CONCLUSIONS
  Left external carotid-to-left subclavian artery bypass is a promising procedure in patients undergoing thoracic endovascular aortic repair that covers the orifice of the left subclavian artery.
authors.affiliation: Department of Cardiovascular Surgery, School of Medicine, Tokai University, Kanagawa, Japan.
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Shimura
authors.forename: Masaomi
authors.initials: M
authors.lastname: Yamaguchi
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Cho
authors.forename: Akira
authors.initials: A
authors.lastname: Aki
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Furuya
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Ueda
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D001027:Aortography / Q000379:methods; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation / Q000379:methods*; D017536:Carotid Artery, Common / Q000601:surgery*; D057510:Endovascular Procedures / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011138:Polytetrafluoroethylene; D011474:Prosthesis Design; D015607:Stents; D013348:Subclavian Artery / Q000601:surgery*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency; D014826:Vocal Cord Paralysis / Q000209:etiology
chemical_list: D011138:Polytetrafluoroethylene
keywords: Aorta; blood vessel prosthesis implantation; carotid artery; common; stents; subclavian artery; thoracic