Tianjin Urinary Stone Composition Analysis

Objective:To understand the Tianjin chemical composition of urinary stones. Comparison of upper and lower urinary tract stones stones by the characteristics, age, gender ratio and urban residential and rural populations living in urinary stones by the crowd of the similarities and differences, for the treatment of urinary calculi and prevention of reference.Methods:Second Hospital of Tianjin Medical University, January 2005-2009 in December after extracorporeal shock wave lithotripsy patient discharge and inpatient surgery for removal of 420 cases of urinary calculi samples using infrared spectrometry for quantitative and qualitative analysis.Results:420 patients with urinary tract stones in calcium oxalate stones accounted for just 21.4%(111/420), COM and calcium phosphate stones account for 31.4% (132/420), hydroxyapatite+calcium oxalate stones accounted for 17.4%(73/420), uric acid stones accounted for 12.4%(52/420), carbonate apatite stones 8.8% (37/420), magnesium ammonium phosphate stones 3.1%(13/420), cystine stones 0.5%(2/420), dicalcium phosphate stones to 0, in which calcium stones accounted for 75.2%(316/420).Uric acid stones is higher than the national literature. Male and female prevalence ratio of 2.75:1,the peak incidence between the age of 25-65 years of age, old age the incidence of urinary stones are on the rise.Upper urinary tract stones accounted for 94.5%(397/420),lower urinary tract stones 5.5%(23/420), a ratio of 17.3:1.The proportion of lower urinary tract stones suburbs 9.0%(12/134) than in urban 3.8%(11/286),no significant difference in stone composition.5 years, no significant difference between the stone composition.Conclusion:1.The group of upper urinary calcium stone more than the urinary tract, including magnesium ammonium phosphate stones and uric acid stones in lower urinary tract more than the previous.2.Uric acid stones was higher than the percentage share of the total number of stones reported in the literature. This is the area of urinary stone treatment and prevention of some reference value.3.The peak age of onset of urinary stones delay, indicating old age the incidence of urinary calculi to increase.4.Outskirts of the city is higher than the lower urinary tract stones, consider the level of living conditions and medical care.5.The stone composition in 5 years, no significant changes in composition.