National survey of antibiotic resistance in Pseudomonas aeruginosa

Abstract
The antibiotic susceptibility of 1866 consecutive non-replicate clinical isolates of Pseudomonas aeruginosa from 24 British hospitals was examined. Antibiotics tested and resistance breakpoints selected were: carbenicillin (MIC> 128 mg/1), azlocillin (>32 mg/1), cefotaxime (> 16 mg/1), cefoperazone (> 16 mg/1), cefta-zidime (> 16 mg/1), amikacin (>4 mg/1) and gentamicin (>2 mg/1). Resistance frequencies detected were: carbenicillin 9·6%, azlocillin 3·9%, cefotaxime 19·0%, cefoperazone 4·3%, ceftazidime 0·3%, amikacin 3·8%, and gentamicin 5·5%.