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Sudden hemolysis indicating prosthetic valve dysfunction.

J R Allard, G Fraser, A R Dobell

    Canadian Journal of Surgery. Journal Canadien De Chirurgie
    |May 1, 1976
    PubMed
    Summary
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    Prosthetic valve thrombosis can occur after aortic valve replacement, even months later. Gross hemoglobinuria was the sole symptom in one patient, highlighting the need for vigilance.

    Area of Science:

    • Cardiovascular Surgery
    • Cardiology
    • Medical Complications

    Background:

    • Aortic valve replacement is a common surgical procedure to treat severe aortic valve disease.
    • The Björk-Shiley prosthesis is a type of mechanical heart valve used in these replacements.
    • Prosthetic valve thrombosis is a known but serious complication following valve replacement surgery.

    Observation:

    • A 57-year-old male patient presented with gross hemoglobinuria ten months post-aortic valve replacement.
    • The patient had a Björk-Shiley mechanical prosthesis implanted.
    • No other clinical symptoms were reported besides the significant hemoglobinuria.

    Findings:

    • The patient was diagnosed with thrombotic encapsulation of the prosthetic aortic valve.

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  • Gross hemoglobinuria was the only presenting clinical manifestation of this severe complication.
  • The case report details the management strategy employed for this specific patient.

    • Implications:

    • This case underscores that even subtle clinical changes after prosthetic valve replacement warrant thorough investigation.
    • Hemoglobinuria, particularly gross, should be considered a potential indicator of prosthetic valve thrombosis.
    • Increased clinical suspicion and prompt diagnostic evaluation are crucial for managing prosthetic valve thrombosis effectively.