Distribution and drug resistance of 239 gram-negative bacteria causing urinary tract infections

Objective To survey the distribution and resistant characteristic of pathogens in urinary infection.Methods Distribution and drug resistance of pathogens in 239 culture-positive urinary tract infection patients from Aug 2010 to Nov 2011 were analyzed.Results A total of 239 strains of Gram negative bacteria were collected,The first frequent bacteria was Escherichia coli.followed by Pseudomonas aeruginosa and Klebsiella pneumoniae the resistant rates of the gram negative bacilli to imipenem,meropenem and piperacillin/tazobactam were 3.8%,6.0% and 14.3%,respectively.ESBLs producing Escherichia coli and Klebsiella pneumoniae was 68.0% and 30.0%,resectively.Conclusion Distribution of gram-negative bacteria causing urinary tract infections is wide,the antimicrobial resistance of Gram negative bacilli is different,the antibiotics for clinical treatment of patients with urinary tract infection should be used rationally according to the result of susceptibility test.