Enterobacteriaceae
Ampicillin
Ampicillin/sulbactam
Amoxicillin/clavulonate
Piperacillin/Tazobactam
Ticarcillin/clavulonate
cefazolin
Ceftazidime
Sensitive
≤8
≤ 8/4
≤ 8/4
≤ 16/4
≤ 16/2
≤2
≤4
Intermediate
16
16/8
16/8
32/4-64/4
32/2-64/2
4
8
Resistant
≥ 32
≥ 32/16
≥ 32/16
≥ 128/4
≥ 128/2
≥8
≥ 16
Cefepime
cefotaxime
≤8
≤1
16
2
≥ 32
≥4
ceftriaxone
Cefotetan
≤1
≤ 16
2
32
≥4
≥ 64
cefoxitin
Cefuroxime (IV)
≤8
≤8
16
16
≥ 32
≥ 32
Cefuroxime (PO)
≤4
8-16
≥ 32
Cefdinir
Cefpodoxime
≤1
≤2
2
4
≥4
≥8
Cefixime
aztreonam
≤1
≤4
2
8
≥4
≥ 16
doripenem
ertapenem
≤1
≤ 0.5
2
1
≥4
≥2
Imipenem
≤1
2
≥4
Meropenem
gentamicin
≤1
≤4
2
8
≥4
≥ 16
tobramycin
amikacin
≤4
≤ 16
8
32
≥ 16
≥ 64
Tetracycline
doxycycline
≤4
≤4
8
8
≥ 16
≥ 16
Minocycline
≤4
8
≥ 16
ciprofloxacin
levofloxacin
≤1
≤2
2
4
≥4
≥8
TMP/SMX
Chloramphenicol
≤ 2/38
≤8
--16
≥ 4/76
≥ 32
Fosfomycin
Nitrofurantoin
≤ 64
≤ 32
128
64
≥ 256
≥ 128