Chemical Analysis of Urinary Stones at Tribhuvan University Teaching Hospital.

Introduction: Urinary Stone (Urolithiasis) is a common problem all over the world, and its prevalence is higher in those who lives in mountains, deserts, tropical and subtropical areas. The notorious nature of its recurrence is a great challenge to the treatment of urinary stone disease. Urinary stone is the third most common problems of urinary tract, exceeded only by urinary tract infection, and pathological conditions of the prostate. Worldwide prevalence of urinary stone disease is increasing day by day. The present study focuses on the demographic distribution and chemical analysis of the urinary stones of the patients undergoing surgical intervention. Methods: A prospective, descriptive study was carried out over a period of one year from July 2006 to July 2007 at department of General Surgery, Urology unit, Tribhuvan University Teaching Hospital Kathmandu. There was a total of 4124 patients admitted in surgical ward. Among them 153 patients were admitted at Urology unit and stones of 50 patients who underwent surgical intervention were sent for biochemical analysis of stone at National Reference Laboratory Kathmandu. Results: Urinary stones with the male to female ratio was 1.5:1. Urinary stone was found more common in hilly area of Nepal which was 64.0%. The most common urinary stone was Calcium Oxalate, 66.0%. Conclusion: The study revealed that majority of the patients were between 20 to 29 years of age in which 60.0%were male and 40.0%female. 64.0 % of stones were seen in Hilly area of Nepal, and calcium oxalate was the most common types of urinary stone. Keywords: Urinary stone, RAHS.