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Table 5 Proportions of antimicrobial resistance among non-fermentative gram-negative bacilli that were most frequently isolated from bloodstream infections

From: Bloodstream infections caused by multidrug-resistant gram-negative bacteria: epidemiological, clinical and microbiological features

  Pseudomonas aeruginosa
(n = 12)
Acinetobacter baumannii
(n = 6)
Antimicrobial drug No. of isolates % resistant* No. of isolates % resistant*
Amikacin 1 16.7
Aztreonam 4 25 1** 16.7**
Amp-Sul NA NA 3*** 50.0***
Pip-Tazo 1 8.3 4 66.7
Ceftazidime 1 8.3 4 66.7
Cefepime 4 66.7
Imipenem 3 25.0 4 66.7
Meropenem 2 16.7 4 66.7
Ciprofloxacin 1 8.3 4 66.7
Gentamicin 2 33.3
Polymyxin
Sulfamethoxazole trimethoprim NA NA 5 83.4
Tobramycin NA NA
Tigecycline NA NA -**** -****
  1. *Considered resistant or intermediary profile;**just 1 isolate of A. baumannii was tested against aztreonam;*** just 1 isolate of A. baumannii was not tested against ampicillin-sulbactam; *** just 1 isolate of A. baumannii was not tested against tigecycline; NA- Not applicable; and (−) no resistant microbial isolates