A prolonged neurotoxicity case illustrates why improvement in an EEG after lorazepam does not establish removal of the underlying cause.
An older woman with end-stage renal disease developed encephalopathy and seizures during a cefepime-related clinical course. Lorazepam and levetiracetam were given, and abnormal discharges abated. Mental status remained impaired, with later improvement after delayed hemodialysis and additional management.
This uncontrolled case involved severe illness and several interventions. A drug-reaction scoring system is not independent causal proof. Treatment response does not show that benzodiazepines caused the original confusion, and residual unresponsiveness can have multiple explanations.
For an expert chronology, distinguish the suspected offending drug, seizure treatment, EEG response, clearance-related interventions, and clinical recovery. A sedative given during evaluation may complicate the picture without being its primary cause. The report supports differential diagnosis rather than attributing all altered consciousness to benzodiazepines.
Source reviewed: Prolonged Cefepime Induced Neurotoxicity in a Patient with End Stage Renal Disease (PMC8800466). Forensic applications above are interpretive analysis of the supplied paper.
Related reading: Remimazolam Produced Burst Suppression in a Neurosurgical Case; Young-Child Nasal-Diazepam Study Separated Pharmacokinetics From Repeat-Dose Use.