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Table 1 MIC50 and MIC90 values and antimicrobial resistance of the 93 A. baumannii isolates

From: Dissemination of clonal complex 2 Acinetobacter baumannii strains co-producing carbapenemases and 16S rRNA methylase ArmA in Vietnam

Antimicrobial agents Breakpoint for resistance (mg/L) % Resistant Range (mg/L) MIC50 (mg/L) MIC90 (mg/L)
Imipenem ≥8 100 8–128 32 64
Meropenem ≥8 99 4–128 32 64
Amikacin ≥64 87 0.5 – > 512 >512 >512
Ciprofloxacin ≥4 100 32 – > 512 >512 >512
Colistin ≥4 5 0.125–16 0.5 1
Tigecycline - - ≤0.125–16 1 8