title: Intentional left subclavian artery occlusion by thoracic aortic stent-grafts without surgical transposition.
abstract: OBJECTIVE
  To report the consequences of endoluminal deployment of stent-grafts in the thoracic aorta with intentional occlusion of the left subclavian artery.
  
  
  METHODS
  Three patients with an aortic type-B dissection and 1 with a thoracic aneurysm were treated endoluminally with Talent stent-grafts implanted over the ostium of the left subclavian artery without prior surgical subclavian-carotid transposition. The primary intimal tears were sealed and the degenerative aneurysm excluded; blood pressure in the left arm was significantly diminished immediately after the stent-graft was released, but adequate collateral retrograde perfusion via the left vertebral artery was apparent in all patients. No neurological deficit and no symptoms of left arm ischemia were observed in a follow-up that ranged from 14 to 20 months.
  
  
  CONCLUSIONS
  Our limited experience shows that occlusion of the left subclavian artery with a stent-graft is well tolerated. If ischemic symptoms occur, a transposition procedure can be performed on an elective basis.
authors.affiliation: Department of Radiology, University Hospital Graz, Austria. klaus.hausegger@kfunigraz.ac.at
authors.forename: K A
authors.initials: KA
authors.lastname: Hausegger
authors.forename: P
authors.initials: P
authors.lastname: Oberwalder
authors.forename: K
authors.initials: K
authors.lastname: Tiesenhausen
authors.forename: J
authors.initials: J
authors.lastname: Tauss
authors.forename: O
authors.initials: O
authors.lastname: Stanger
authors.forename: P
authors.initials: P
authors.lastname: Schedlbauer
authors.forename: H
authors.initials: H
authors.lastname: Deutschmann
authors.forename: B
authors.initials: B
authors.lastname: Rigler
mesh_terms: D000368:Aged; D000784:Aortic Dissection / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D017545:Aortic Aneurysm, Thoracic / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D001132:Arm / Q000098:blood supply / Q000503:physiopathology; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000503:physiopathology; D001807:Blood Vessel Prosthesis / Q000009:adverse effects*; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects*; D003097:Collateral Circulation / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D015607:Stents / Q000009:adverse effects*; D013348:Subclavian Artery / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D014711:Vertebral Artery / Q000000981:diagnostic imaging / Q000503:physiopathology