title: Type A dissection following endovascular thoracic aortic stent-graft repair.
abstract: OBJECTIVE
  To describe our experience with endovascular stent-graft repairs in the thoracic aorta focusing on the secondary complication of type A dissection.
  
  
  METHODS
  Between January 1996 and April 2004, 73 patients were treated for traumatic thoracic aortic rupture (n=15), type B dissection (n=22), or atherosclerotic descending thoracic aortic aneurysms (TAA, n=36). A retrospective review of the records found 5 (6.8%) patients (3 men; median age 64 years, range 43-87) who experienced a type A dissection at a median 20 days (range 2-124) after thoracic stent-graft repair for 3 type B dissections, 1 TAA, and a late type I endoleak that appeared 28 months after initial stent-graft repair of a traumatic dissection.
  
  
  RESULTS
  In 3 patients (2 dissections, 1 endoleak), a tear in the aortic wall at the proximal stent-graft was responsible for a retrograde type A dissection. Underlying disease was the cause of the type A dissection in the 2 other patients (1 dissection, 1 TAA) and was unrelated to the stent-grafts. Three patients underwent open surgery at 3, 26, and 124 days after stent-graft placement; 2 procedures were successful, but the third patient died 3 months later due to multiorgan failure. Two type A dissections were untreated: one patient died from cardiac tamponade 14 days after successful stent-graft exclusion of the type I endoleak; the other patient refused further treatment and survived. The procedure-related mortality following acute retrograde type A dissection was 40%.
  
  
  CONCLUSIONS
  Endovascular stent-graft repair of the thoracic aorta is associated with lower morbidity and mortality rates than surgical repair, although potentially lethal complications, acute or delayed, may occur.
authors.affiliation: Departments of Vascular Surgery, University Hospital Innsbruck, A-6020 Innsbruck, Austria. Beate.Neuhauser@uibk.ac.at
authors.forename: Beate
authors.initials: B
authors.lastname: Neuhauser
authors.forename: Benedikt V
authors.initials: BV
authors.lastname: Czermak
authors.forename: John
authors.initials: J
authors.lastname: Fish
authors.forename: Reinhold
authors.initials: R
authors.lastname: Perkmann
authors.forename: Werner
authors.initials: W
authors.lastname: Jaschke
authors.forename: Andreas
authors.initials: A
authors.lastname: Chemelli
authors.forename: Gustav
authors.initials: G
authors.lastname: Fraedrich
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000784:Aortic Dissection / Q000000981:diagnostic imaging / Q000209:etiology* / Q000401:mortality / Q000601:surgery; D000792:Angiography; D017545:Aortic Aneurysm, Thoracic / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects* / Q000379:methods; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015601:Injury Severity Score; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D012189:Retrospective Studies; D018570:Risk Assessment; D015607:Stents / Q000009:adverse effects*; D015996:Survival Rate; D013898:Thoracic Injuries / Q000000981:diagnostic imaging / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome