title: Primary hyperparathyroidism and coexisting nephrogenic diabetes insipidus: rapid postoperative correction.
abstract: Shortly after diagnosis of primary hyperparathyroidism, a patient had serum hyperosmolality, polyuria, isosthenuria, profound potassium depletion, and elevated plasma antidiuretic hormone levels, all consistent with nephrogenic diabetes insipidus. After parathyroidectomy, serum calcium and serum osmolality levels fell concurrently. Profound potassium deficits did not recur. We propose that (1) hypercalcemia produced a concentrating defect and polyuria; (2) renal tubular acidosis and polyuria combined to produce severe potassium depletion; (3) hypokalemia potentiated the nephrogenic diabetes insipidus caused by hypercalcemia; and (4) postoperative disappearance of the diabetes insipidus confirmed its reversible, purely metabolic causes.
authors.affiliation: Department of Internal Medicine, Northeastern Ohio Universities College of Medicine, St. Elizabeth Hospital Medical Center, Youngstown 44501-1790.
authors.forename: G
authors.initials: G
authors.lastname: Ellis
authors.forename: G
authors.initials: G
authors.lastname: Spirtos
authors.forename: F
authors.initials: F
authors.lastname: Polsky
mesh_terms: D003919:Diabetes Insipidus / Q000150:complications* / Q000209:etiology; D006801:Humans; D006934:Hypercalcemia / Q000150:complications; D006961:Hyperparathyroidism / Q000150:complications* / Q000601:surgery; D007008:Hypokalemia / Q000150:complications; D008297:Male; D008875:Middle Aged