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Solomon Abramovich, FRCS; Deepak K. Prasher, PhD

Arch Otolaryngol Head Neck Surg. 1986;112(9):925-928.

Abstract
• Audiometric investigations and electrophysiologic recordings of cochlear and brain-stem auditory evoked potentials (BAEPs) were performed in 13 patients to elucidate further the type of hearing disorders in Ramsay Hunt syndrome. Transtympanic electrocochleography showed no enhancement of summating potential and did not suggest secondary endolymphatic hydrops. The recording of BAEPs was clearly abnormal in several of the 13 patients. The striking feature of the abnormalities in these patients was the prolongation of the latencies of waves III and V with the preservation of wave I, which clearly suggests retrocochlear involvement. In all the patients tested, abnormalities of the BAEPs were present only on the affected side. It is possible, on the basis of BAEP findings, to suggest that in Ramsay Hunt syndrome both cochlear and retrocochlear involvement may occur.

(Arch Otolaryngol Head Neck Surg 1986;112:925-928)

Author Affiliations
From the Ear, Nose, and Throat Department, St Bartholomew's Hospital (Dr Abramovich), and the Medical Research Council Neuro-Otology Unit, Institute of Neurology, National Hospital (Dr Prasher), London.

Footnotes
Accepted for publication Feb 3, 1986.

Reprint requests to ENT Department, St Bartholomew's Hospital, West Smithfield, London EC1A 7BE, England (Dr Abramovich).

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