Differences in Urinary Stone Composition according to Body Habitus.
10.4111/kju.2011.52.9.622
- Author:
Ji Yun JEONG
1
;
Seung Whan DOO
;
Won Jae YANG
;
Kwang Woo LEE
;
Jun Mo KIM
Author Information
1. Department of Urology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea. wonjya@schmc.ac.kr
- Publication Type:Original Article
- Keywords:
Body mass index;
Obesity;
Urinary calculi
- MeSH:
Body Mass Index;
Calcium;
Calcium Oxalate;
Calcium Phosphates;
Humans;
Hydrogen-Ion Concentration;
Logistic Models;
Magnesium Compounds;
Obesity;
Phosphates;
Ureter;
Uric Acid;
Urinary Calculi
- From:Korean Journal of Urology
2011;52(9):622-625
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: We analyzed differences in urinary stone composition according to body mass index (BMI). MATERIALS AND METHODS: Between January 2007 and December 2010, 505 ureteral or renal stones were collected from 505 patients who underwent surgical intervention. Data on patient age, gender, BMI, urinary pH, and stone composition were collected. RESULTS: The patients' mean age was 49.2 years (range, 20 to 83 years). Of the 505 patients, 196 (38.7%) had calcium oxalate (CO) stones, 172 (33.9%) had mixed calcium oxalate and calcium phosphate (COP) stones, 72 (14.2%) had calcium phosphate (CP) stones, 50 (9.8%) had uric acid (UA) stones, and 15 (2.9%) had struvite stones. We excluded struvite stones in the statistical analysis because of the small number of patients; a total of 490 patients were included in this study. In the multinomial logistic regression analysis, obesity was found to be associated with UA stones compared with COP stones (odds ratio [OR] 3.488; 95% confidence interval [CI] 1.732-7.025; p<0.001) and CP stones (OR 2.765; 95% CI 1.222-6.259; p=0.015). Similar results were observed for CO stones compared with COP stones (OR 2.682; 95% CI 1.727-4.164; p<0.001) and CP stones (OR 2.126; 95% CI 1.176-3.843; p<0.013). CONCLUSIONS: Obesity was associated with UA and CO stones compared with the occurrence of COP and CP stones.
