Table 3: Antimicrobial susceptibility pattern and MICs of 28 P. aeruginosa isolates.

Antimicrobial Agents No.(%) susceptible MIC90 (μg/ml) MIC Range (μg/ml)
Colistin 27(96) 0.32 0.32-2
Ceftazidime 23(82) 9.8 0.125– >256
Ciprofloxacin 22(79) - -
Imipenem 21(75) 2.6 0.25 – 24
Piperacillin-tazobactam 21(75) - -
Aztreonam 19(68) 5.3 0.25 – 16
Meropenem 19(68) - -
Amikacin 12(43) 13.6 1.5 – >256
Gentamicin 8(29) -