[Survey and comparison of the urinary calcium level in normal and calcium stone forming groups]

ABSTRACT

Urinary stones are the third common disease in the urinary system. Because there is not any study about Hypercalciuria in normal people and patients with stone in our province [Guilan], we decided to evaluate and compare the level of urinary calcium in normal people and patients with urinary stones. Survey of the urinary calcium level in normal and calcium stone forming groups. This is a descriptive, retrospective study. Our cases were the people who had attended to Razi Hospital outpatient ward during 2004-6 and included 502 people without history of urinary tract stone [group 1], 391 patients with history of an episode of urinary tract stone [group 2] and 109 patients with history of more than one episode of urinary stone [group 3]. We extracted requested information such as age, sex, Urine Ca 24h level, serum Ca level and stone analysis from the files and data analyzed by t-test. The most common stone was Calcium Oxalate [95%]. The mean level of urinary calcium was 156 +/- 7 mg/dl in group 1, 163 +/- 7 mg/dl in group 2 and 183 +/- 5 mg/dl in group 3. There was a significant statistical difference between these 3 groups [p<0.05]. Hypercalciuria is a risk factor for stone formation, so we can use as a protective method to inhibit stone formation