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  • Title: Repair of a quadricuspid truncal valve by tricuspidization and reconstruction of right ventricular outflow tract with the excised truncal cusp.
    Author: Wei LY, Chen YS, Chiu IS, Huang SC.
    Journal: J Thorac Cardiovasc Surg; 2018 Mar; 155(3):1186-1189. PubMed ID: 29248281.
    Abstract:
    OBJECTIVE: Quadricuspid truncal valves are susceptible to regurgitation, and tricuspid configuration is considered more durable after repairing the truncal valve. We report a new method by excising the excessive truncal cuspid to reconstruct a new competent aortic valve. METHODS: Bilateral pulmonary banding failed to stabilize a 4-month-old baby with type I truncus arteriosus and quadricuspid truncal valve with severe regurgitation, so surgery was performed. The aorta was transected, and the pulmonary arteries was separated from the aorta. There was an excessive cusp between the right coronary and left coronary cusp. A transannular incision was carried into the right ventricular outflow tract through the left border of the right coronary cusp. We performed truncal valve repair by translocating the excessive cusp, its annulus, and its wall to the right ventricular outflow tract side and reconstructing the neoaortic valve to tricuspid. Ventricular septal defect was repair through a right ventricular outflow tract approach. The floor of the right ventricular outflow tract was made from the excised cusp, including its wall and the resected posterior aortic wall. Then the anterior wall was reconstructed with bovine pericardial patch with a 19-mm porcine valve. RESULTS: Postoperative echocardiography confirmed a tricuspid neo-aortic valve with trivial aortic regurgitation, no residual ventricular septal defect, and a patent right ventricular outflow tract. CONCLUSIONS: We present the surgical technique to repair a quadricuspid truncal valve insufficiency by using the excessive anterior cusp and its pedicled flap for reconstruction of the pulmonary pathway and restoration of the tricuspid truncal valve.
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