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The Annals of Thoracic Surgery, Vol 53, 920-927, Copyright © 1992 by The Society of Thoracic Surgeons

ARTICLES

Replacement of the thoracic aorta with intraluminal sutureless prosthesis

RL Berger, KJ Karlson, RF Dunton and HK Leonardi
Overholt Division of Cardiothoracic Surgery, New England Deaconess Hospital, Boston, Massachusetts.

A survey of the collective experience reveals that between 1976 and 1990, a sutureless intraluminal prosthesis was used to replace the ascending thoracic aorta, arch, and descending thoracic aorta in 122, 14, and 81 patients, respectively. During these 217 operations, at least 364 of the 434 anastomoses were performed by sutureless fixation. The underlying disease processes consisted of acute and chronic dissections; atherosclerotic, Marfan's, and mycotic aneurysms; and intraoperative disruptions of the ascending aorta. The data in the literature suggest that sutureless fixation shortens aortic cross-clamp time and reduces blood loss. Early graft-related complications were few and probably can be further reduced by improving surgical techniques. The incidence of paraplegia and renal failure after descending aortic grafting was identical at 2.5%. The operative mortality rate for ascending aortic, arch, and descending aortic replacement was 13.1%, 42.9%, and 14.8%, respectively. Long-term follow-up of 143 patients revealed satisfactory graft function with three possible device-related deaths and no other known complications attributable to the prosthesis. There are, however, anecdotal references to late complications from the intraluminal prosthesis. Most of these relate to faulty implantation techniques, but some could be due to flaws inherent in the concept of sutureless grafting. The collective experience suggests that grafting of the thoracic aorta is less hazardous with the sutureless than with the conventional sutured anastomosis technique. The implications of the anecdotal accounts about late complications remain to be determined.

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