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Background: Urinary tract infections are a serious health problem affecting millions of people each year.They are the second most common type of infection in the body.The objective of study was to determine the etiology and antimicrobial susceptibility patterns of urinary tract infections pathogens isolated in our Patology Clinic laboratory. Materials and Methods: During the period July 2007- July 2008,were analysed 1422 urine samples.The determination of the total microbe load were acquire with an kit of the BIO-DETECTOR while the identification of germs with Apy sistem. Antibiotic susceptibility tests were assaied with the ATB UR strip. Results: About the total of samples analysed, 320 (22%) had significant bacteriuria. Escherichia coli was the most common etiologic agent isolated (62%), followed by Klebsiella ssp. (10%), Pseudomonas aeruginosa (5,95%) and Proteus mirabilis (5%). Gram-positive bacteria accounted for only 7.32% , with prevalence of Staphylococcus ssp (5,32) and Enterococcus spp (2%). The most effective antibiotics for Gram- were: Imipenem, Amikacin, Ceftazidime and Cefotaxim, while for Gram+ were: Minocyclin,Vancomycin and Oxacillin. Conclusion: Escherichia coli was the microrganism more frequently isolated between Gram negative bacteria with very susceptible to Amoxicillin. Currently, the empirical use of Cotrimoxazole and Amoxicillin is not recommended for Enterobacteriaceae. Urinary tract infections are more common in women than in men. Men are more likely to get a UTI once past the age of 65. Current data on the prevalence of multidrug resistance among urinary tract isolates should be a consideration to change the current empiric treatment of IVU.
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