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Table 2 Species drug combinations with changes ≥ 10% in the category susceptible in cumulative AST data prepared form representative strain collections

From: Impact of minimal inhibitory concentration breakpoints on local cumulative bacterial susceptibility data and antibiotic consumption

  Assignment of strain collections to AST categories (%)
  DIN EUCAST*
Species#/drug S I R S I R
K. pneumoniae (n = 100)       
pip./taz. 72 24 4 84* 9 7
P. mirabilis (n = 100)       
ciprofloxacin 78 15 7 68 10 22
M. morganii (n = 30)       
cefotaxime 83 13 3 73 10 17
ciprofloxacin 100 0 0 87* 13 0
P. aeruginosa (n = 100)       
piperacillin 40 56 4 91* 0 9
ciprofloxacin 88 5 7 76* 12 12
gentamicin 73 22 5 95* 0 5
  1. *Asterisks indicate a significant (p < 0.05) difference of the number of susceptible isolates according to EUCAST MIC breakpoints compared to DIN.
  2. #No variation ≥ 10% in the category susceptible was found for E. coli (n = 100), E. cloacae (n = 100), S. marcescens (n = 37), C. freundii (n = 20), S. maltophilia (n = 47), S. aureus (n = 100), coagulase negative staphylococci (n = 100), E. feacalis (n = 100), and E. faecium (n = 100).