Value of Urine Analysis in Diagnosis of Urinary Tract Infection in Children

Document Type : Research Paper



Introduction:Because of high prevalence and morbidity of UTI in children, early diagnosis and on time treatment are essential; but confirmation of UTI diagnosis needs a urine culture which takes at least 48 hours. The aim of this study was to ascertain predictive values of urinalysis in the diagnosis of UTI.
Material and Methods:In this descriptive study the recorded files of 59 febrile patients, 30 patients with positive urine culture and 29 patients with negative urine culture, hospitalized in Imam Reza Hospital from 2003 to 2004, were evaluated. Age, sex, results of U/A including pyuria, hematuria, urine nitrite test and urine culture were gathered and analyzed using descriptive statistics.
Results: In this study sensitivity and specificity of nitrite test in diagnosis of UTI were 46.7% and 89.7% respectively. Sensitivity and specificity of pyuria were 76.7% and 48.3% respectively.Sensitivity and specificity of U/A in diagnosis of UTI in children under 2 years old were 85 % and 70 %, but in patients older than 2 years old were 100% and 35% respectively.
Conclusion:This study indicated that non active U/A in children older than 2 years old rules out UTI in nearly 100% of cases.


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