Table 4 Proportions of antimicrobial resistance among Enterobacteriaceae that were most frequently isolated from bloodstream infections
Escherichia coli (n = 50) | Klebsiella pneumoniae (n = 50) | Serratia marcescens (n = 50) | Enterobacter cloacae (n = 13) | |||||
|---|---|---|---|---|---|---|---|---|
Antimicrobial drug | No. of isolates | % resistant* | No. of isolates | % resistant* | No. of isolates | % resistant* | No. of isolates | % resistant* |
Amikacin | – | – | 1 | 2.0 | 1 | 6.7 | – | – |
Amp-Sul | 28 | 56.0 | 31 | 62.0 | 15 | 100 | 13 | 100 |
Pip-Tazo | 5** | 10.0** | 21 | 52.0 | 1 | 6.7 | 3 | 23.1 |
Ceftriaxone | 10 | 20.0 | 25 | 50.0 | NA | NA | NA | NA |
Ceftazidime | 10 | 20.0 | 25 | 50.0 | – | – | NA | NA |
Cefepime | 10 | 20.0 | 25 | 50.0 | 1 | 6.7 | 3 | 23.1 |
Cefuroxime | 12 | 24.0 | 26 | 52.0 | NA | NA | NA | NA |
Imipenem | 2 | 4.0 | 5 | 10.0 | -∆∆ | -∆∆ | 1 | 7.7 |
Meropenem | 1 | 2.0 | 5 | 10.0 | – | – | 1 | 7.7 |
Ertapenem | 1 | 2.0 | 5+ | 10.0+ | 1 | 6.7 | 2 | 15.4 |
Ciprofloxacin | 15 | 30.0 | 23 | 46.0 | 1§ | 6.7§ | 5 | 38.5 |
Gentamicin | 5*** | 10.0*** | 14 | 28.0 | – | – | 3 | 23.1 |
Polymyxin | – | – | 1 | 2.0 | 15§§ | 100§§ | 4 | 30.8 |
Tigecycline | – | – | 4∆ | 8.0∆ | 1Ω | 6.7 Ω | 1 Ω Ω | 7.7 Ω Ω |