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  • Title: Microangiopathic hemolytic anemia as the initial manifestation of porcine valve failure.
    Author: Enzenauer RJ, Berenberg JL, Cassell PF.
    Journal: South Med J; 1990 Aug; 83(8):912-7. PubMed ID: 2200135.
    Abstract:
    We compare the findings in a patient whose microangiopathic hemolytic anemia was the initial sign of porcine valvular dysfunction, with those of six other patients with porcine valve failure seen at Tripler Army Medical Center and with those of 12 patients with hemolytic anemia and porcine valve failure whose cases have been reported in the literature. Total bilirubin and serum lactic dehydrogenase were directly related to the degree of anemia in patients with porcine valve dysfunction. Echocardiography confirmed valve dysfunction in only four of eight patients, while cardiac catheterization confirmed valve failure in 16 of 17 patients. Laboratory evidence for hemolysis was minimal in 31 patients who had normal, functioning porcine valves. Microangiopathic hemolytic anemia in the presence of a porcine prosthetic heart valve, and in the absence of other causes, warrants a thorough evaluation to rule out valve dysfunction. Routine laboratory screening for hemolysis may aid the early diagnosis of porcine valve failure.
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