[Experimental giant arterial aneurysm. Resection and reconstruction of the arterial wall]

The authors describe 3 experimental techniques for the treatment of giant arterial aneurysm, based on removal of the aneurysmal pouch and reconstruction of the arterial wall. The aneurysm is realized with a venous graft implanted with end-to-side anastomosis on the common carotid artery on the rabbit. In the first experimental model it is resected along its basis; the arterial wall is reconstructed by means of a patch of dural substitute (dacron coated with silicone rubber) fixed with biological glue (human fibrine). In the second model, the experimental aneurysm is hooded with a venous graft sutured to the adventitia of the artery with four angular stitches and biological glue. The artery is then clamped, the aneurysm is resected along its basis. The median incision in the venous graft is sutured, restoring the continuity of the arterial wall. In the third model, a small artery is implanted at the bottom of the aneurysmal sac, realizing a condition similar to a collateral vessel arising from an aneurysm. In this case, too, the aneurysm is hooded by a venous graft fixed only to the adventitia of the arterial wall with the above mentioned technique. The main and the collateral vessels are clamped, and this latter is severed; the aneurysm is resected along its basis; the median incision in the venous graft is sutured, restoring the continuity of the arterial wall; the collateral vessel is re-implanted along the suture line. These techniques aim to realize the reconstruction of the arterial wall without stenosis and shortening the clamping time.(ABSTRACT TRUNCATED AT 250 WORDS)