title: A strategy for treatment of type III and IV thoracoabdominal aortic aneurysm.
abstract: The aim of this study was to describe the results of resection and graft replacement for type III and IV thoracoabdominal aortic aneurysm repair. In this retrospective study, 27 patients underwent resection and graft replacement for type III (10) or type IV (17) thoracoabdominal aortic aneurysms. Nine patients had rupture, 12 were symptomatic, and 6 were operated on electively. The "clamp-and-sew" technique was applied in six cases. In 12 patients with type IV aneurysm the proximal part of the vascular graft was beveled, including the orifices of the celiac, superior mesenteric, and one or both renal arteries in the proximal anastomosis. Finally, eight patients underwent surgical application of a shunt for perfusion of the celiac and superior mesenteric arteries. One patient was treated with a combination of open and endovascular surgery. There were four early deaths (14.8%), all following operations for rupture, which represents a 45% mortality rate in this subgroup of patients. Two patients with type III aneurysm had postoperative paraparesis. One was symptomatic whereas the other was operated on electively. Excluding the patients with rupture, the accumulated 5-year survival rate was 65%. These results indicate that direct cross-clamping of the aorta gives limited time for performing the necessary anastomoses without inducing mesenteric ischemia. Inclusion of the orifices of the visceral arteries in the upper anastomosis is a feasible method during surgery for type IV aneurysms. Finally, shunting of the celiac and the superior mesenteric arteries seems to be useful, especially during surgery for type III aneurysms.
authors.affiliation: Department of Surgery, St. Olavs Hospital, University Hospital of Trondheim, Trondheim, Norway.
authors.forename: T O
authors.initials: TO
authors.lastname: Eide
authors.forename: P
authors.initials: P
authors.lastname: Romundstad
authors.forename: O D
authors.initials: OD
authors.lastname: Saether
authors.forename: H O
authors.initials: HO
authors.lastname: Myhre
authors.forename: P
authors.initials: P
authors.lastname: Aadahl
mesh_terms: D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000145:classification / Q000401:mortality / Q000601:surgery*; D017545:Aortic Aneurysm, Thoracic / Q000145:classification / Q000401:mortality / Q000601:surgery*; D001019:Aortic Rupture / Q000401:mortality / Q000601:surgery; D001166:Arteriovenous Shunt, Surgical / Q000379:methods; D019917:Blood Vessel Prosthesis Implantation; D013504:Cardiovascular Surgical Procedures / Q000379:methods; D005260:Female; D006801:Humans; D007430:Intraoperative Care; D008297:Male; D012189:Retrospective Studies; D012307:Risk Factors; D015996:Survival Rate