Case Report: Cefepime Induced Neurotoxicity Following a Change in Infusion Time.

Cefepime is an antibiotic associated with cefepime induced neurotoxicity (CIN), particularly in those with reduced renal function, or in cases of inappropriate medication dosing. This report describes a case of CIN associated with a change in infusion duration from 180 to30 minutes, which to the best of our knowledge has not been previously reported in the literature. A 73-year old male was treated with extended infusion cefepime over 180 minutes while hospitalized with recurrent pneumonia. On discharge, cefepime was continued as outpatient parenteral antimicrobial therapy (OPAT) administered over 30 minutes. The patient began to experience symptoms of neurotoxicity after 1 day of receiving OPAT, which subsequently led to a readmission as neurological symptoms worsened. Cefepime was discontinued and symptoms resolved within 48 hours. Renal function was stable throughout treatment and no other causes for neurotoxicity were noted. This is a unique case of CIN secondary to shortened infusion time, which is clinically relevant, particularly during transitions of care. Further investigation, including more widespread use of therapeutic drug monitoring will be beneficial to further elucidate the relationship between infusion time and CIN development.