| problematic clinical isolates of pseudomonas aeruginosa from the university hospitals in sofia, bulgaria: current status of antimicrobial resistance and prevailing resistance mechanisms. | a total of 203 clinical isolates of pseudomonas aeruginosa was collected during 2001-2006 from five university hospitals in sofia, bulgaria, to assess the current levels of antimicrobial susceptibility and to evaluate resistance mechanisms to antipseudomonal antimicrobial agents. the antibiotic resistance rates against the following antimicrobials were: carbenicillin 93.1 %, azlocillin 91.6 %, piperacillin 86.2 %, piperacillin/tazobactam 56.8 %, ceftazidime 45.8 %, cefepime 48.9 %, cefpirome 58. ... | 2007 | 17577062 |
| widespread detection of veb-1-type extended-spectrum beta-lactamases among nosocomial ceftazidime-resistant pseudomonas aeruginosa isolates in sofia, bulgaria. | a total of 132 ceftazidime-resistant clinical isolates of pseudomonas aeruginosa were collected during 2001-2005 from 5 university hospitals in sofia, bulgaria to assess the current levels of antimicrobial susceptibility and to evaluate resistance mechanisms to beta-lactams. antimicrobial susceptibilities were detected by a disk diffusion method and e-test. polymerase chain reaction amplification and sequencing of bla(veb-1 )and bla(per-1 )were performed. the antibiotic resistance rates were: to ... | 2007 | 17434821 |