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Related Experiment Videos

Hypercalcaemia and hypokalaemia in tuberculosis

G W Bradley, G M Sterling

    Thorax
    |August 1, 1978
    PubMed
    Summary

    Patients with tuberculosis may be hypersensitive to vitamin D, leading to hypercalcemia. Steroids effectively treated this condition, suggesting a link between tuberculosis, vitamin D sensitivity, and calcium imbalances.

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    Area of Science:

    • Endocrinology
    • Pulmonology
    • Nephrology

    Background:

    • Tuberculosis (TB) is a significant global health issue.
    • Hypercalcemia and hypokalemia are electrolyte disturbances that can occur in various medical conditions.

    Observation:

    • Two patients with extensive pulmonary tuberculosis presented with hypercalcemia and hypokalemia.
    • Hypercalcemia was linked to low-dose vitamin D supplementation, suggesting increased vitamin D sensitivity in TB patients.
    • Kveim test was positive in both patients, indicating a potential similarity to sarcoidosis.

    Findings:

    • The hypercalcemia in these patients was rapidly resolved with corticosteroid therapy.
    • Other causes of hypercalcemia, including hyperparathyroidism, thyrotoxicosis, Addison's disease, and multiple myeloma, were ruled out.
    • Hypokalemia was characterized by increased renal potassium excretion, likely resulting from hypercalcemia-induced distal tubular damage.

    Implications:

    • This case series highlights a potential vitamin D hypersensitivity in patients with tuberculosis.
    • The findings suggest that vitamin D supplementation should be approached with caution in TB patients.
    • Corticosteroids may be an effective treatment for vitamin D-induced hypercalcemia in the context of tuberculosis.

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