Table 3.
MIC (μg/mL) results for MDR Enterobacteriaceae isolates
| Number of isolates with MICs (μg/mL) indicated
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| <1 | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 | 512 | >512 | |
| E. coli (n=27) | ||||||||||||
| SAM | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | R/6 | R/1 | R/3 | R/4 | R/12 |
| AK | 0 | 0 | 0 | S/2 | S/2 | S/3 | I/11 | 0 | 0 | 0 | R/1 | R/8 |
| CE | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/5 | R/22 |
| CRO | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/10 | R/17 |
| FEP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/4 | R/23 |
| MEM | S/3 | S/9 | 0 | R/3 | R/3 | R/3 | R/2 | R/2 | R/2 | 0 | 0 | 0 |
| AMP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 | R/25 |
| LEV | 0 | 0 | 0 | I/1 | 0 | 0 | 0 | R/2 | R/3 | R/5 | R/8 | R/8 |
| CT | S/27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| K. pneumoniae (n=24) | ||||||||||||
| SAM | 0 | 0 | 0 | 0 | 0 | 0 | R/4 | 0 | R/3 | R/2 | R/6 | R/9 |
| AK | 0 | 0 | 0 | S/2 | S/1 | S/2 | I/3 | 0 | R/2 | 0 | R/2 | R/12 |
| CE | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/24 |
| CRO | 0 | S/2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/7 | R/15 |
| FEP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | R/2 | 0 | R/21 |
| MEM | S/7 | S/4 | I/2 | R/3 | R/1 | R/2 | R/2 | 0 | R/1 | R/2 | 0 | 0 |
| AMP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 | R/22 |
| LEV | 0 | 0 | S/5 | 0 | R/2 | 0 | R/2 | R/3 | R/1 | R/2 | R/3 | R/6 |
| CT | S/21 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 | 0 | 0 | R/1 | 0 |
| E. cloacae (n=4) | ||||||||||||
| SAM | 0 | 0 | 0 | 0 | 0 | I/1 | R/3 | 0 | 0 | 0 | 0 | 0 |
| AK | 0 | 0 | 0 | 0 | 0 | S/3 | I/1 | 0 | 0 | 0 | 0 | 0 |
| CE | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/4 |
| CRO | 0 | S/3 | 0 | 0 | 0 | R/1 | 0 | 0 | 0 | 0 | 0 | 0 |
| FEP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | R/3 |
| MEM | S/4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| AMP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/4 |
| LEV | 0 | 0 | S/3 | 0 | R/1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CT | S/1 | 0 | 0 | 0 | 0 | R/2 | 0 | 0 | 0 | R/1 | 0 | 0 |
| K. oxytoca (n=2) | ||||||||||||
| SAM | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | 0 | R/1 |
| AK | 0 | 0 | 0 | 0 | 0 | S/2 | 0 | 0 | 0 | 0 | 0 | 0 |
| CE | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 |
| CRO | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 |
| FEP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 |
| MEM | S/1 | S/1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| AMP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 |
| LEV | 0 | 0 | 0 | 0 | 0 | R/1 | 0 | 0 | 0 | 0 | 0 | R/1 |
| CT | S/2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| K. ornithinolytica (n=2) | ||||||||||||
| SAM | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | 0 | 0 | 0 | 0 | R/1 |
| AK | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | 0 | 0 | 0 | R/1 |
| CE | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/2 |
| CRO | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | R/1 |
| FEP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | R/1 |
| MEM | S/1 | S/1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| AMP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | R/1 | R/1 |
| LEV | 0 | 0 | 0 | I/2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CT | S/2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Abbreviations: MIC, minimum inhibitory concentration; MDR, multidrug resistant; E. coli, Escherichia coli; SAM, ampicillin/sulbactam; R, resistant; AK, amikacin; S, sensitive; I, intermediate; CE, cephradine; CRO, ceftriaxone; FEP, cefepime; MEM, meropenem; AMP, ampicillin; LEV, levofloxacin; CT, colistin; K. pneumoniae, Klebsiella pneumoniae; E. cloacae, Enterobacter cloacae; K. oxytoca, Klebsiella oxytoca; K. ornithinolytica, Klebsiella ornithinolytica.