title: [Diagnostic significance of electrocortical responses to rhythmic and solitary photic stimuli in patients with hepato-portal encephalopathy].
abstract: In order to clarify some diagnostical criteria of latent hepato-portal encephalopathy in 57 patients with intrahepatic forms of portal hypertension the authors studied the character of driving response in photorhythmical stimulation. In 9 patients the development of evoked potentials depending upon the significance of the stimula was studied as well. The studies confirmed the prognostical significance of a slowing down the mean frequency of rhythms in the EEG in relation to the development of acute encephalopathy and a certain tendency to the shift in the spectrum of driving responses to low frequency and a worsening of driving responses in slowing down the medium rhythm frequency of EEG. In patients with changed resting activity in the Background EEG there was a drop in the amplitude of late components of evoked potentials.
mesh_terms: D000293:Adolescent; D000328:Adult; D000643:Ammonium Chloride; D001927:Brain Diseases / Q000175:diagnosis* / Q000209:etiology; D004569:Electroencephalography; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009355:Neomycin; D010775:Photic Stimulation; D011379:Prognosis
chemical_list: D000643:Ammonium Chloride; D009355:Neomycin
vernacular_title: Diagnosticheskoe znachenie reaktsii na ritmicheskie i odinochnye svetovye stimuly u bol'nykh s gepato-portal'noĭ éntsefalopatieĭ