Antibiotic susceptibility of microorganisms of urinary tract infection in adult outpatients in Bushehr port

Background: Urinary tract infection (UTI) is one of the most common infectious diseases in inpatients and outpatients, thus recognition of the pathogen and a proper treatment can prevent related complications. The aim of this study was to identify various microorganisms causing community acquired UTI and their relative prevalence and antibiotic susceptibilities in outpatients of Bushehr port in 2006. Methods: In this retrospective study, urine samples of 2000 outpatients with community acquired UTI who referred to standard clinical laboratories of Bushehr in the year of 2006 were collected. The results of urine cultures were adjusted to the results of Urine analysis. The microbial susceptibilities of urinary tract infection pathogens were evaluated using disc diffusion method. Result: UTI in women was more prevalent (85.8%). The most common UTI pathogen was Escherichia coli (40.2%) and staphylococci (23.7%), respectively. Other organisms were Klebsialla and Entrobacter (20.8% and 12%, respectively). In 3.4% of patients, Serratia, Pseudomonas, citrobacter, Proteus mirabilis and Acinetobacter were isolated, as miscellaneous group. Escherichia coli (88.1%), which is the most common cause of UTI had the highest antibiotic sensivity to the third generation of cephalosporins. and the highest antibiotic resistance to vancomycin (97.1%). Staphylococci showed a high susceptibility to Aminoglycosides (94.3%) and the most resistance to the third generation of cephalosporins (67.4%). Conclusion: The most common cause of UTI in Bushehr port was Escherichia coli with a high susceptibility to the third generation of cephalosporins. The second common organisms were staphylococci with a high antimicrobial susceptibility to aminoglycosides