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Post-COVID-19 complement-mediated TMA: A case report

Jan A Jochims, Babak Yazdani, Bernd Krüger

    Clinical Nephrology
    |July 24, 2024
    PubMed

    Insights

    COVID-19 can trigger thrombotic microangiopathy (TMA), a rare condition causing blood clots and organ damage. Early diagnosis and treatment are crucial to prevent severe kidney injury and potential end-stage renal disease.

    Area of Science:

    • Nephrology
    • Hematology
    • Infectious Diseases

    Background:

    • Systemic COVID-19 infection can lead to multi-organ involvement.
    • A rare but serious complication is complement-mediated thrombotic microangiopathy (TMA).
    • TMA involves endothelial injury, leading to microvascular thrombosis, thrombocytopenia, and hemolytic anemia.

    Observation:

    • A 77-year-old male with COVID-19 pneumonia developed acute kidney injury (AKIN 3) and severe proteinuria.
    • Renal biopsy confirmed severe thrombotic microangiopathy (TMA).
    • The patient required high-flow oxygen, intensive care, and later hospitalization for renal complications.

    Findings:

    • COVID-19-associated TMA was diagnosed.
    • Treatment included high-dose glucocorticoids, plasma exchange, and eculizumab.
    • Initial kidney function decline necessitated temporary hemodialysis, but partial recovery to CKD stage 3b-4b was achieved.

    Implications:

    • COVID-19-associated TMA is an extremely rare but significant complication.
    • Prompt diagnosis and multi-modal treatment are essential for managing TMA.
    • TMA poses a risk for long-term kidney damage, potentially leading to end-stage renal disease if untreated.

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