E coli was resistance to quinolones (levofloxacin: 38.9%, ciprofloxacin: 40.3%), sensitive to the third and fourth generation cephalosporin (ceftriaxone: 58.6%, ceftazidime: 70% and cefepime: 77.1%), amikacin (70.7%), imipenem (89.4%) and meropenem (92.6%); S epidermidis was resistance to the second and third generation cephalosporins (cefuroxim: 37.9%, ceftriaxone: 43.3% and ceftazidime: 53.8%), sulfamethoxazole / trimethoprim (95%) and quinolon (resistance to levofloxacin, ofloxacin and ciprofloxacin were 36.7%, 61.8% and 67.6%, respectively); sensitive to the β-lactam / β-lactamase inhibitor combinations, imipenem (97%) and meropenem (89.3%).