title: Late acute aortic dissection after coronary artery bypass.
abstract: BACKGROUND
  Late ascending aortic dissection after coronary artery bypass grafting (CABG) is an uncommon phenomenon, and treatment presents a complex clinical dilemma.
  
  
  METHODS
  Between 1995 and 2005, eight patients were diagnosed with post-CABG late acute aortic dissection. Mean age was 61.7 (range 52-76), and mean period between CABG and late acute aortic dissection was 45.3 months (range 5 to 122 months). Three patients underwent surgical replacement of the ascending aorta. One patient died after surgery, and the other two had an uneventful recovery, with a successful mean 6.5-year follow-up. Five patients were treated conservatively, with a mean follow-up of 81.2 months (range 50-112 months).
  
  
  CONCLUSIONS
  Periodic computed tomography (CT) scans showed minor or no change in aortic diameter and satisfactory general condition. Late acute aortic dissection after CABG is rare. Only a few reports have been published, and no standard treatment guidelines exist.
  
  
  CONCLUSIONS
  We assume that postoperative pericardial scarring and adhesions provide some protection against progression of the dissection and therefore suggest that preferred treatment in non-stable patients should be surgical. In stable patients, close follow-up and blood pressure control are beneficial. Late ascending aortic dissection after CABG is rare, and treatment presents a clinical dilemma. We treated eight patients with post-CABG late acute aortic dissection. Three underwent surgical replacement of the ascending aorta. One died after surgery, and the other two had an uneventful recovery. Five patients were treated conservatively. No standard treatment guidelines exist for late acute aortic dissection after CABG. We assume that postoperative pericardial scarring and adhesions provide some protection against progression of the dissection, and suggest that preferred treatment in non-stable patients should be surgical. In stable patients, close follow-up and blood pressure control are beneficial.
authors.affiliation: Department of Cardiac and Thoracic Surgery, The Chaim Sheba Medical Center, Tel Hashomer, Israel. amihaysh@hotmail.com
authors.forename: Amihay
authors.initials: A
authors.lastname: Shinfeld
authors.forename: Ehud
authors.initials: E
authors.lastname: Raanani
mesh_terms: D000208:Acute Disease; D000368:Aged; D000784:Aortic Dissection / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D000959:Antihypertensive Agents / Q000627:therapeutic use; D017545:Aortic Aneurysm, Thoracic / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D001027:Aortography; D019917:Blood Vessel Prosthesis Implantation; D001026:Coronary Artery Bypass; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D012086:Reoperation; D015996:Survival Rate; D014057:Tomography, X-Ray Computed
chemical_list: D000959:Antihypertensive Agents