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Bioprosthetic mitral valve thrombosis less than one year after replacement and an ablative MAZE procedure: a case report
Authors:Omar Saeed  Jr" target="_blank">Byron R WilliamsJr  Melvin Ku  Omar M Lattouf
Institution:(1) Department of Medicine, Emory University, Atlanta, Ga, USA;(2) Division of Cardiology, Emory University, Atlanta, Ga, USA;(3) Department of Medicine, Michigan State University, East Lansing, MI, USA;(4) Division of Cardiothoracic Surgery, Emory University, Atlanta, Ga, USA
Abstract:Occurrence of bioprosthetic valve thrombosis less than a year after replacement is very uncommon. Here, we describe a case of a 57 year old male, who presented 10 months after receiving a bioprosthetic mitral valve replacement with a two week history of dyspnea on exertion, worsening orthopnea and decreased exercise tolerance. Echocardiography revealed severe mitral regurgitation (MR), thrombosis of the posterior mitral leaflet, left atrial (LA) mural thrombus and a depressed left ventricular ejection fraction of twenty-five percent. Given severe clot burden and decompensated heart failure (New York Heart Association - NYHA class III) repeat sternotomy was done to replace the bioprosthetic mitral valve and remove LA mural thrombus. MR was resolved postoperatively. This brief report further reviews promoting factors, established guidelines and management strategies of bioprosthetic valve thrombosis.
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