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  • Title: [A Case of Mitral Valvular Re-repair in a Patient with Hemolytic Anemia after Mitral Valvular Repair].
    Author: Tomino M, Miyata K, Takeshita Y, Kaneko K, Kanazawa H, Uchino H.
    Journal: Masui; 2015 Jul; 64(7):761-3. PubMed ID: 26422945.
    Abstract:
    A 54-year-old woman was admitted for mitral valvular repair. After folding plasty to A3, a 30 mm Cosgrove-Edwards ring was placed. There was no mitral regurgitation jet observed by transesophageal echocardiography (TEE) during the operation. However, high blood pressure was monitored and treated in the intensive care unit, hemolytic anemia developed, and the serum lactate dehydrogenase level was elevated. Two weeks after the operation, serum lactate dehydrogenase was again elevated. TEE showed mild mitral regurgitation and the regurgitation jet colliding with the annuloplasty ring. Multiple transfusions of red blood cells were required. Repeat surgery was therefore undertaken. Lam and associates previously studying patients on hemolysis after mitral valvular repair noted high grade mitral regurgitation jets fragmented or accelerated. In the present case, mitral regurgitation was mild, but the high velocity and manner of regurgitation (collision with the annuloplasty ring) could cause hemolytic anemia. In the present case, high blood pressure might have caused chordae rupture. Furthermore, a flexible ring, such as the Cosgrove-Edwards ring, is likely to cause hemolytic anemia. As contributing factors to hemolysis after mitral valvular repair, perioperative blood pressure management and type of ring are significant.
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