[Urinary calcium excretion in a renal form of primary hyperparathyroidism].
The renal calcium transport was studied in 31 patients with the renal form of initial hyperparathyroidism. The amount of calcium excreted from 100 ml-glomerular filtrate was lowered in patients with hyperparathyroidism comparatively to normal (0.11 +/- 0.005 mg% against 0.19 +/- 0.005 mg%). Determination of filtration calcium is proposed to be used as a diagnostic test in this pathology. In spite of the fact that the increased percentage of calcium tubular reabsorption detected simultaneously is statistically significant, this test seems to be less reliable diagnostic criterion because of minute quantitative differences (99.0 +/- 0.054%, the normal being 98.1 +/- 0.31%).
D000042:Absorption; D000293:Adolescent; D000328:Adult; D002118:Calcium / Q000652:urine*; D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D006961:Hyperparathyroidism / Q000503:physiopathology*; D007678:Kidney Glomerulus / Q000503:physiopathology; D007684:Kidney Tubules / Q000378:metabolism; D008297:Male; D008875:Middle Aged
D002118:Calcium
Otsenka mochevoĭ ékskretsii kal'tsiia pri pochechnoĭ forme pervichnogo giperparatireoidizma.