Table 1. Minimal inhibitory concentrations (MIC's) of the different isolates of Pseudomonas aeruginosa from the different sites.
| Pleural fluid Day 1 | Blood Day 3 | Peritoneal fluid Day 4 | Pleural fluid Day 7 | Peritoneal fluid Day 14 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day after admission Susceptibility | MIC | MIC | MIC | MIC | MIC | MIC | MIC | |||||||
| Cefepime | 8 | S | 16 | I | 8 | S | ≥64 | R | 16 | I | 8 | S | 32 | R |
| Piperacillin/Tazobactam | 32 | S | >64 | R | >64 | R | 128 | R | 32 | S | 32 | S | ≥256 | R |
| Ceftazadime | ---- | - | >16 | R | ---- | - | 16 | I | 8 | S | ---- | - | 16 | I |
| Aztreonam | ---- | - | >16 | R | >16 | R | ≥16 | R | >16 | R | ---- | - | ---- | - |
| Imipenem | ≥16 | R | >8 | R | >8 | R | ≥16 | R | >8 | R | ≥16 | R | ≥16 | R |
| Meropenem | ≥16 | R | >8 | R | >8 | R | ≥16 | R | >8 | R | ≥16 | R | ≥16 | R |
| Doripenem | ---- | - | ---- | - | ---- | - | >2 | ---- | - | ---- | - | ---- | - | |
| Gentamicin | 8 | I | 2 | S | 2 | S | 8 | I | ≤1 | S | 2 | S | 8 | I |
| Tobramycin | ≤1 | S | ≤1 | S | ≤1 | S | 2 | S | ≤1 | S | ≤1 | S | ≤1 | S |
| Amikacin | 16 | S | 8 | S | 8 | S | 32 | I | ≤4 | S | 4 | S | 16 | S |
| Colistimethate | ---- | - | ---- | - | ---- | - | 2 | S | ---- | - | ---- | - | 2 | S |
| Ciprofloxacin | 0.5 | S | 2 | I | 1 | S | 2 | I | 0.5 | S | 0.5 | I | 2 | I |
| Levofloxacin | 4 I | I | 8 | R | 4 | I | ≥8 | R | 2 | S | 4 | I | ≥8 | R |
MIC, minimal inhibitory concentrations; I, intermediare; R, resistant; S, susceptible.