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Increasing parathyroid hormone concentrations in untreated primary hyperparathyroidism.
1Mineral Metabolic Research Group, Copenhagen, Denmark.
Journal of Internal Medicine
|November 1, 1992
Summary
Serial monitoring of intact parathyroid hormone (PTH) is more sensitive than serum ionized calcium for detecting progression in primary hyperparathyroidism. PTH levels increased significantly over time in most patients, unlike calcium levels.
Area of Science:
- Endocrinology
- Metabolic Bone Disease
Background:
- Primary hyperparathyroidism (PHPT) is a common endocrine disorder.
- Monitoring disease progression is crucial for patient management.
Purpose of the Study:
- To compare the sensitivity of serum ionized calcium and intact parathyroid hormone (PTH) measurements in detecting progression of mild to moderate PHPT.
- To analyze changes in these markers over a 2.45-year follow-up period.
Main Methods:
- Serial measurements of serum ionized calcium and intact PTH in 24 patients with PHPT.
- Patients were divided into two groups based on PTH increase.
- Creatinine levels were monitored to assess renal function.
Main Results:
- Overall, serum ionized calcium remained stable, while intact PTH increased significantly.
- Group 1 (11 patients) showed a 2.6% increase in ionized calcium and a 78% increase in PTH.
- Group 2 (13 patients) showed stable ionized calcium and a 22% increase in PTH.
Conclusions:
- Intact PTH measurements are more sensitive than serum ionized calcium for detecting PHPT progression.
- Serial PTH monitoring is recommended for managing patients with mild to moderate PHPT.