Accuracy of automated and manual systems for susceptibility testing of Pseudomonas aeruginosa to piperacillin and piperacillin-tazobactam

New Microbiol. 2011 Jan;34(1):97-9. Epub 2011 Jan 15.

Abstract

This study aimed to evaluate the accuracy of routine systems (Vitek2 cards AST-N022 and AST-N026; Kirby Bauer; Etest) for susceptibility testing of Pseudomonas aeruginosa to piperacillin and piperacillin-tazobactam. Vitek2 (card AST-N022) showed the worst performance; the other three methods (Vitek2 card AST-N026, Kirby-Bauer and E-test) performed comparably but never fulfilled the minimal standard proposed by FDA.

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Bacteriological Techniques / methods
  • Bacteriological Techniques / standards
  • Humans
  • Microbial Sensitivity Tests / methods
  • Microbial Sensitivity Tests / standards*
  • Penicillanic Acid / analogs & derivatives
  • Penicillanic Acid / pharmacology
  • Piperacillin / pharmacology*
  • Piperacillin, Tazobactam Drug Combination
  • Predictive Value of Tests
  • Pseudomonas Infections / microbiology
  • Pseudomonas aeruginosa / drug effects*
  • Pseudomonas aeruginosa / isolation & purification

Substances

  • Anti-Bacterial Agents
  • Piperacillin, Tazobactam Drug Combination
  • Penicillanic Acid
  • Piperacillin