The surgical management of diseases of the aorta is usually followed by high rates of morbidity/mortality. The patient who is usually elderly and debilitated presents in serious condition, and often with changes in various organs and systems caused by the acute disease itself. Conventional surgery requires complex coadjuvant techniques such as prolonged extracorporeal circulation (ECC), deep hypothermia, complete circulatory arrest besides prolonged time of aortic clamping. In 1988, in an attempt to reduce the surgical aggression on this already feeble patient, we developed an intraluminal ring (1, 2). It was projected and measurements were experimented to simplify its handing and anastomosis resulting in a marked decrease in operative time, ECC time and aortic clamping. It often eliminated the need of ECC and hypothermia resulting in easy, rapid, safe and hemostatic anastomosis. Between March 1988 and Jannuary 1999, 432 patients underwent surgical treatment of dissections or aneurysms of the aorta on our Service. The intraluminal ring with anastomosis was employed in 328 patients. Four hundred and eighty-nine rings were utilized. Diseases included acute dissection of the aorta type A (25), acute dissection of the aorta type B (29), aneurysms of the ascending aorta (81), aneurysms of the aortic arch (08), aneurysms of the descending thoracic aorta (28), thoraco-abdominal aneurysms (17) and aneurysms of the infra-renal abdominal aorta (40). Over-all mortality was 13.41%. Out-patient followup ranged from 11 years to 25 days. The actuarial survival curve in 11 years was 67.3%. In no case did we observe the complications described in the literature such as emboli, formation of pseudo-aneurysms, ruptures or stenosis. On our Service, use of the intraluminal ring simplifies surgery, shortens the time necessary for anastomosis and reduces bleeding, simplifying techniques, reducing mortality and providing a good perspective of survival over the long term.
Aorta; Blood vessel prosthesis; Stents; Vascular diseases
