CALCIUM AND PHOSPHORUS EXCRETION IN THE URINE

Abstract

Many workers have indicated the possibility that the increased urinary concentration of calcium and phosphorus associated with certain generalized conditions such as hyperparathyroidism,¹bone disease and fractures²may be an important factor in calcium urolithiasis. However, little quantitative work on this concentration in patients with urinary calculi is available. Since on theoretical, experimental³and clinical grounds it would seem that increased urinary concentration of calcium and phosphorus should be an important factor in the formation of stone, it was felt that a quantitative study of the urinary calcium and phosphorus in all types of patients with calcium urolithiasis and the quantitative differences in this factor as the result of treatment would be of significance from an etiologic, prognostic and therapeutic point of view. It is my purpose in this paper to present the results of such a study in a series of thirty-five consecutively admitted patients with