| Isolates (N = 32) | Susceptibility to | Types of Beta- lactamases production | |||||
| Ampicillin | Ampicillin clavunic acid | Cefotaxime | Ceftadizime | Aztreonam | Imipenem | ||
| P. aeruginosa (100%) | R | R | R | R | S | S | AmpC (class C/group 1) |