Transtympanic electrocochleography during glycerol dehydration.
Thirteen patients with Meniere's disorder were tested using transtympanic electrocochleography during glycerol dehydration. The most common finding was a decrease in the negative summating potential and this appeared to be a more sensitive indicator of changes occurring in the cochlea than pure tone audiometry and speech discrimination. A pathophysiological explanation for this observation is offered and the possibility of using this decrease in the negative summating potential as a pointer to the prognosis of endolymphatic sac surgery is discussed.
D000200:Action Potentials; D000328:Adult; D001299:Audiometry / Q000295:instrumentation; D001309:Auditory Threshold; D003051:Cochlea / Q000503:physiopathology*; D005990:Glycerol; D006801:Humans; D008575:Meniere Disease / Q000175:diagnosis* / Q000503:physiopathology; D009994:Osmolar Concentration; D014432:Tympanic Membrane
D005990:Glycerol