Chemical Analysis of the Urinary Stones / 대한비뇨기과학회지

ABSTRACT

We have analyzed 100 urinary calculi by chemical analysis, which obtained from the patients admitted our department during the period from March, 1981 to February, 1983. The following results were obtained 1. The results of chemical analysis of 100 urinary calculi revealed calcium oxalate phosphate in 43%, calcium oxalate in 19%, calcium phosphate in 15%, ammonium phosphate in 12%, carbonate calcium oxalate phosphate in 7%, uric acid in 2%, acid + calcium phosphate in 2%. 2. 40 of 100 patients with urinary stones showed bacteriuria and Staphylococcus epidermidis was the most frequent organism. 3. The causative diseases of the urinary stones were renal tuberculosis 4 cases, neurogenic bladder in 4 cases, urethral stricture in 3 cases, BPH in 1 case and hyperparathyroidism in 1 case. 4. The incidence of high urinary calcium amount was greater in lithiasis group(43%) than in control group(17%) The incidence of high urinary calcium amount in lithiasis group was as following order calcium oxalate phosphate in 55.8%, calcium phosphate in 46.7%, calcium in 42.1% and ammonium phosphate in 28%.