| Summary: | Background: Urinary tract infection or UTI is one of the most common infectious diseases in outpatients and inpatients. E.coli is the most prevalent organism in UTI. The aim of this study is to compare etiologic agents in UTI in inpatients and outpatients of Gorgan city. Materials and methods: This descriptive- sectional study was carried out on 174 outpatients and 284 inpatients in 2011-12. For each person we filled a questionnaire including demographic information. In laboratory, samples cultured on EMB, MacConkey and blood Agar(Liofilcom co), and incubated in 37oC for 24 hours. After detection of gram of each bacteria , specialized and biochemical tests were performed. The results were compared with standard tables for identification of bacteria. Statistical analysis in SPSS18 was done and P≥0.05 was considered significant. Results: Of 458 studied samples, just 38% were inpatients. 70.1% of 174 inpatients were women. Clinical symptoms like urgency(23.6%) and fever (43.6%) observed in inpatients that were more than outpatients. In inpatients, E.coli, the most frequent microorganism, seen 48.3%. Then Klebsiella 10.3%, Enterobacter 9.4%, Pseudomonas 7.5%, Enterococcus 1.1%, Providencia 1.1%, Seratia 2.3% and Edvardsiella 0.2% were the more frequent bacteria. S.aureus isolated just in outpatients. There were more frequent differences on etiologic agent in inpatients and outpatients. Providencia, Seratia, Edvardsiella were only isolated from inpatients. Conclusion: E.coli in our study, such as other studies in Iran and other countries, is the most important pathogens in UTI. Frequency of women in comparison with men in UTI, similar to other studies, was high. This characteristic is related to physiological position in women and men.
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