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Table 1 Susceptibility profiles of E. coli or K. pneumoniae isolated from blood cultures with resistance to ceftriaxone during study period

From: Comparable outcomes for β-lactam/β-lactamase inhibitor combinations and carbapenems in definitive treatment of bloodstream infections caused by cefotaxime-resistant Escherichia coli or Klebsiella pneumoniae

Susceptibility category Antimicrobial agent tested
E. coli AMP AMC TZP CXM CRO CTX CAZ FEP FOX IPM MEM ETP LVX CIP SXT GEN AMK
R (%) 100 60 0 100 100 100 96 0 11 0 0 0 71 71 59 35 0
I (%) 0 0 0 0 0 0 4 4 20 0 0 0 0 3 0 0 3
S (%) 0 40 100 0 0 0 0 96 68 100 100 100 29 27 41 65 97
Total tested 79 73 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79
K. pneumoniae                  
R (%) 100 45 0 100 100 100 100 92 0 0 0 0 15 30 85 31 0
I (%) 0 0 0 0 0 0 0 8 8 0 0 0 0 40 0 0 0
S (%) 0 55 100 0 0 0 0 0 92 100 100 100 85 30 15 69 100
Total tested 13 11 13 13 13 13 13 13 13 13 13 13 13 10 13 13 13
  1. R = resistant, I = intermediate, S = susceptible; AMP = ampicillin, AMC = amoxicillin-clavulanate, TZP = piperacillin-tazobactam, CXM = cefuroxime, CRO = ceftriaxone, CTX = cefotaxime, CAZ = ceftazidime, FEP = cefepime, FOX = cefoxitin, IMP = imipenem, MEM = meropenem, ETP = ertapenem, LVX = levofloxacin, CIP = ciprofloxacin, SXT = trimethoprim-sulphamethoxazole, GEN = gentamicin, AMK = amikacin.