P P Urbanski1, R W Hacker. 1. Herz- und Gefäss-Klinik, Bad Neustadt, Germany. urbanski@kardiochirurg.de
Abstract
BACKGROUND: Replacement of the aortic valve and the ascending aorta with a conduit consisting of a mechanical valve and a Dacron tube has become a fairly common procedure. Commercially available conduits employing xenografts are rarely used for the same purpose, because if a reoperation becomes necessary due to degeneration of the valve prosthesis, usually the entire conduit must be replaced. A composite graft with a stentless valve, such as we describe in this article, avoids this problem, because in case of reoperation only the valve cusps need to be resected and the tube graft may be left in place. METHODS: Surgical technique of replacement of the aortic valve and the ascending aorta with a stentless composite graft and early results of the procedure are presented. RESULTS: Hemodynamics of the graft soon after surgery were excellent, with an average systolic gradient of 8 mm Hg and no regurgitation across the valve. There were two reoperations for bleeding in the early postoperative period. CONCLUSIONS: The stentless composite graft we describe provides excellent hemodynamics, has no need for anticoagulation, and is expected to offer a benefit in case of reoperation.
BACKGROUND: Replacement of the aortic valve and the ascending aorta with a conduit consisting of a mechanical valve and a Dacron tube has become a fairly common procedure. Commercially available conduits employing xenografts are rarely used for the same purpose, because if a reoperation becomes necessary due to degeneration of the valve prosthesis, usually the entire conduit must be replaced. A composite graft with a stentless valve, such as we describe in this article, avoids this problem, because in case of reoperation only the valve cusps need to be resected and the tube graft may be left in place. METHODS: Surgical technique of replacement of the aortic valve and the ascending aorta with a stentless composite graft and early results of the procedure are presented. RESULTS: Hemodynamics of the graft soon after surgery were excellent, with an average systolic gradient of 8 mm Hg and no regurgitation across the valve. There were two reoperations for bleeding in the early postoperative period. CONCLUSIONS: The stentless composite graft we describe provides excellent hemodynamics, has no need for anticoagulation, and is expected to offer a benefit in case of reoperation.