Four patients with DeBakey type 1 aortic dissection underwent primary repair operations: resection of intimal tear with complete aortic transection, circumferential suture line reinforced with Teflon felt strips, and end-to-end anastomosis. There was one hospital death due to pneumonia, and the other three survived. Postoperative CT revealed excellent thrombogenesis in the residual false lumen in three patients. In one case with Marfan's syndrome thrombus formation was not identified in the false lumen.
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