Abstract
Two patients operated on for atherosclerotic occlusive disease (Case no. 1) and aneurysm resection (Case no. 2) were implanted with an aortobifemoral vascular prosthesis Hemashieid R, a knitted double velour graft impregnated with collagen. This graft does not require preclotting. In Case no. 1, the graft thrombosed eight days postoperatively and was replaced because of the failure of the thrombectomy. The graft was devoid of collagen. In Case no. 2, the patient died five weeks postoperatively, following complications. The graft was well encapsulated and the collagen fibrils remained present. The dissolution of the impregnated collagen was variable.
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