Evaluation of rapid polymyxin Nordmann Poirel test for detection of polymyxin resistance in clinical isolates of Enterobacteriaceae

Eur J Clin Microbiol Infect Dis. 2020 Nov;39(11):2195-2198. doi: 10.1007/s10096-020-03942-4. Epub 2020 Jun 12.

Abstract

Polymyxins play a significant role against carbapenem-resistant Enterobacteriaceae (CRE). A total of 121 clinical samples yielded growth of CRE that were included in the study. Rapid Polymyxin NP test was performed on all the isolates as described by Nordmann P et al. and results were compared with broth microdilution method. Majority of the isolates were Klebsiella pneumoniae (70.2%) followed by Escherichia coli (17.4%). A total of 71 isolates were found resistant and 50 as susceptible by broth microdilution. Sensitivity and specificity of rapid polymyxin NP test were found to be 97.2% and 100%, respectively. Our study concluded that rapid polymyxin NP test is reliable and can be used as an alternative to broth microdilution in resource limited settings.

MeSH terms

  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / therapeutic use*
  • Carbapenem-Resistant Enterobacteriaceae / drug effects
  • Carbapenem-Resistant Enterobacteriaceae / isolation & purification*
  • Diagnostic Tests, Routine
  • Drug Resistance, Bacterial*
  • Enterobacteriaceae Infections / drug therapy*
  • Humans
  • Microbial Sensitivity Tests
  • Pakistan
  • Polymyxins / pharmacology
  • Polymyxins / therapeutic use*
  • Sensitivity and Specificity

Substances

  • Anti-Bacterial Agents
  • Polymyxins