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Fractional inhibitory concentration (FIC) index of the checkerboard procedure in 42 A. baumannii isolates
| Combination of compounds |
FIC index (N,%) |
||||
|---|---|---|---|---|---|
| <0.5 Synergy | 0.5 to 0.75 partial synergy | 0.76 to 1.0 additive effect | >1.0 to 4.0 indifference | >4.0 antagonism | |
| Imipenem + AML | 6 (14.3%) | 15 (35.7%) | 10 (23.8%) | 11 (26.2%) | 0 (0%) |
The concentrations of imipenem and AML used in the checkerboard procedure depended on the MICs of each A. baumannii isolate tested.
