Handling of induced hypercalcaemia in hyperthyroidism

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Abstract
The mean serum calcium of 13 hyperthyroid patients was found to be significantly higher than that of controls matched for sex and age, though none of the patients' values were outside the normal range. Nevertheless, these patients responded very promptly to hypercalcaemia (induced by an intravenous calcium load), and their serum calcium returned to normal much more rapidly compared with the matched controls. There was also increased retention of intravenous calcium load, possibly owing to increased calcitonin production. Calcium infusion may be useful in treating bone diseases in which increased bone resorption exceeds bone accretion.