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[Composition analyses of bilateral urinary tract calculis]
Da-qing Zhou1, Jian Wang, Wen-gang Li
1Department of Urology, No. 303 Hospital of People's Liberation Army, Nanning 530021, China.
Zhonghua Yi Xue Za Zhi
|October 31, 2013
Summary
Bilateral urinary tract calculi compositions vary between patients and even within the same patient. Understanding these stone compositions is crucial for guiding effective treatment strategies.
Area of Science:
- Urology
- Nephrology
- Materials Science
Background:
- Urinary tract calculi (kidney stones) are a common condition.
- Bilateral involvement necessitates understanding stone composition for optimal management.
- Previous studies have focused on unilateral stones, leaving bilateral composition less understood.
Purpose of the Study:
- To investigate the chemical composition of bilateral urinary tract calculi.
- To determine if stone composition is consistent between the left and right urinary tracts in individual patients.
- To provide data that can guide treatment decisions for bilateral kidney stones.
Main Methods:
- Infrared spectrophotometry was used for stone analysis.
- 256 calculi from 126 patients with bilateral urinary stones were analyzed.
- Patients underwent percutaneous nephrolithotomy or ureteroscopic lithotripsy.
Main Results:
- Calcium oxalate was the most prevalent component (85%), followed by carbonate apatite (45%), phosphate (17%), and uric acid (11%).
- 63 patients (50%) exhibited identical stone composition bilaterally.
- 60 patients (50%) presented with different stone compositions in each urinary tract.
Conclusions:
- Bilateral urinary tract calculi compositions are not invariably identical within a single patient.
- Treatment strategies should consider the potential for differing stone compositions between sides.
- Individualized patient assessment is recommended when using contralateral stone analysis to guide treatment.
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