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Soft tissue calcification in chronic dialysis patients

D C Kuzela, W E Huffer, J D Conger

    The American Journal of Pathology
    |February 1, 1977
    PubMed
    Summary
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    Extraosseous soft tissue calcification is common in chronic uremia, affecting 79% of dialysis patients. Severe calcification, particularly in the heart, can be life-threatening and contribute to patient mortality.

    Area of Science:

    • Nephrology
    • Pathology
    • Cardiovascular Science

    Background:

    • Chronic uremia is associated with significant morbidity.
    • Extraosseous calcification is a known complication in uremic patients.
    • The extent and clinical impact of soft tissue calcification require further investigation.

    Purpose of the Study:

    • To evaluate the prevalence, extent, and severity of extraosseous soft tissue calcification in chronically uremic patients.
    • To determine the association between soft tissue calcification and clinical factors.
    • To assess the impact of calcification on patient mortality.

    Main Methods:

    • Retrospective review of autopsy protocols and microscopic slides.
    • Analysis of data from 56 dialyzed and 18 nondialyzed chronically uremic patients.

    Related Experiment Videos

  • Histopathological assessment of soft tissue calcification.

    • Main Results:

    • Calcification was found in 79% of dialysis patients versus 44% of nondialysis patients (P < .025).
    • Commonly affected sites included the heart, lungs, stomach, and kidneys.
    • Severe calcification, especially in the myocardium, was life-threatening, contributing to 6 deaths.

    Conclusions:

    • Extraosseous soft tissue calcification is highly prevalent in chronic uremia, particularly in patients undergoing dialysis.
    • Severe cardiac calcification poses a significant mortality risk in this population.
    • Calcification severity was not correlated with duration of dialysis, age, or metabolic bone disease parameters.