TABLE 1

Susceptibility profile of the patient's four Escherichia coli clinical isolatesa

AgentMIC (μg/ml)Interpretation
Amikacin4Susceptible
Ampicillin≥32Resistant
Ampicillin-sulbactam16Intermediate
Aztreonam≤1Susceptible
Cefepime≤1Susceptible
Ceftazidime≤1Susceptible
Ceftriaxone≤1Susceptible
Ciprofloxacin≥4Resistant
Ertapenem≤0.5Susceptible
Gentamicin≥16Resistant
Imipenem≤1Susceptible
Levofloxacin≥8Resistant
Piperacillin-tazobactam≤4Susceptible
Tobramycin8Intermediate
Trimethoprim-sulfamethoxazole≤20Susceptible
  • a Isolates included (i) the initial orchiectomy isolate and, 6 weeks later, the (ii) urine, (iii) blood, and (iv) cerebrospinal fluid isolates. All isolates gave identical susceptibility testing results.