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Serum calcium during chemotherapy for active pulmonary tuberculosis
European Journal of Respiratory Diseases
|July 1, 1983
Summary
Hypercalcemia, or high serum calcium, was observed in nearly half of patients with active pulmonary tuberculosis during treatment. This condition, potentially triggered by chemotherapy, typically resolved spontaneously.
Area of Science:
- Endocrinology
- Infectious Diseases
- Pulmonary Medicine
Background:
- Tuberculosis (TB) is a significant global health concern.
- Calcium metabolism disturbances are not widely recognized in active pulmonary tuberculosis.
Purpose of the Study:
- To investigate the incidence and characteristics of hypercalcemia in patients with active pulmonary tuberculosis.
- To explore potential triggers and clinical implications of hypercalcemia during TB treatment.
Main Methods:
- Prospective study of 50 consecutive patients with active pulmonary tuberculosis.
- Monitoring of serum calcium levels (corrected for albumin) throughout an at least 8-week observation period.
- Correlation analysis with sputum bacilli, season, and radiographic severity.
Main Results:
- 48% of patients developed hypercalcemia during the study period.
- Maximal serum calcium increase occurred three weeks post-treatment initiation.
- Hypercalcemia showed a trend towards higher values in patients with more severe initial radiographic changes.
Conclusions:
- Hypercalcemia in pulmonary tuberculosis appears to be triggered by chemotherapy.
- The precise mechanisms linking anti-tuberculosis treatment to calcium metabolism alterations remain unclear.
- Most cases of hypercalcemia were asymptomatic and resolved spontaneously, with prompt response to steroids in symptomatic individuals.