Acute effects of phenytoin on brainstem auditory evoked potentials: clinical and experimental study.
In a patient with phenytoin (PHE) intoxication, the brainstem auditory evoked potentials (BAEPs) were lost except for wave I and wave V. The patient recovered. In rats given PHE, we found changes in amplitude, morphology, and latency of BAEP. Within 5 minutes, all waves disappeared except for wave I, and soon thereafter all waves were lost, with PHE plasma concentration between 45.8 and 52.1 micrograms/ml or above. Ninety minutes after infusion, waves gradually reappeared. Loss of BAEP cannot be used as a criterion for brain death unless PHE intoxication is ruled out.
D000328:Adult; D000818:Animals; D001933:Brain Stem / Q000187:drug effects* / Q000502:physiology; D005072:Evoked Potentials, Auditory / Q000187:drug effects*; D005260:Female; D006801:Humans; D008297:Male; D010672:Phenytoin / Q000009:adverse effects* / Q000097:blood; D051381:Rats; D011919:Rats, Inbred Strains
D010672:Phenytoin