The authors report the largest published experience with PTFE H-grafts in the portacaval position. Cumulative late patency of 8- and 10-mm grafts has been 97%, but acute perioperative thromboses have occurred in 15%. Pe rioperative thromboses are currently managed nonoperatively by using angio graphic intervention. Comparing their long-term results with those of dacron grafts in the portal system, the authors conclude that PTFE is a superior pros thetic conduit.
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