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Chalk and cheese: symptomatic hypocalcaemia during paediatric anti-tuberculous therapy

David Burgner1, Elisabeth Schölvinck, Michael Coren

  • 1School of Paediatrics and Child Health, University of Western Australia, Princess Margaret Medical Centre, WA, Australia. dburgner@paed.uwa.edu.au

The Journal of Infection
|July 9, 2004
PubMed

Insights

Standard anti-tuberculosis drugs can disrupt vitamin D and calcium levels in children. This case study highlights hypocalcaemia in two pediatric patients due to these therapies, emphasizing the need for monitoring.

Area of Science:

  • Pediatric Endocrinology
  • Pharmacology
  • Infectious Diseases

Background:

  • Standard anti-tuberculosis therapy is crucial for treating Mycobacterium tuberculosis infections.
  • Vitamin D metabolism and calcium homeostasis are vital for overall health.
  • Disruption of these metabolic pathways can lead to significant health issues.

Observation:

  • Two pediatric patients undergoing anti-tuberculosis treatment presented with symptomatic hypocalcaemia.
  • The hypocalcaemia was found to be secondary to hypovitaminosis D.
  • Rifampicin and isoniazid were identified as the likely precipitating agents.

Findings:

  • Anti-tuberculosis drugs, specifically rifampicin and isoniazid, can adversely affect vitamin D metabolism in children.
  • This disruption can lead to clinically significant hypocalcaemia.
  • This interaction is previously unreported in the pediatric population.

Implications:

  • Clinicians should be aware of the potential for vitamin D and calcium disturbances in children treated for tuberculosis.
  • Monitoring of vitamin D and calcium levels may be warranted during anti-tuberculosis therapy.
  • Further research is needed to elucidate the mechanisms and prevalence of this interaction.

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