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Synergistic effect of PEI in combination with novobiocin and ceftazidime against different P. aeruginosa strains
| Organism | Antibiotic | Checkerboard FIC index (interpretation) | Killing curve effecta |
|---|---|---|---|
| P. aeruginosa 100609 | Novobiocin | 0.10 (Sb) | Synergy |
| Ceftazidime | 0.04 (S) | Synergy | |
| P. aeruginosa 25619 | Novobiocin | 0.35 (S) | Synergy |
| Ceftazidime | 0.09 (S) | Synergy |
Combination of 250 μg/ml PEI and one-fourth the MIC of novobiocin or ceftazidime.
S, synergy.
