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Auditory Brain-Stem Evoked Potentials in Bell's Palsy
Nechama Uri, MD;
Gerald Schuchman, PhD;
Hillel Pratt, PhD
Arch Otolaryngol. 1984;110(5):301-304.
Abstract
• In an attempt to assess objectively the integrity of the auditory pathways in patients suffering from Bell's palsy, an audiometric evaluation was performed and auditory brain-stem evoked potentials (ABEP) were obtained from 24 patients within the first week from the onset of facial weakness. Despite negative audiometric findings, significant ABEP abnormalities (>2.5 SDs) were observed for 25% of the sample. In each case the ABEP deviation suggested prolonged brain-stem conduction time; for some patients the aberration was only apparent with an increased stimulus repetition rate. The ABEP measures were found to be independent of the side or severity of the paralysis, the acoustic reflex, or reported dysacusis. The ABEP was of no value in predicting recovery of facial muscle function. It is suggested that the facial paralysis may be only the overt manifestation of a generalized pathologic condition.
(Arch Otolaryngol 1984;110:301-304)
Author Affiliations
From the Department of Otolaryngology, Carmel Hospital (Dr Uri); Audiology Clinic, Linn Medical Center (Dr Schuchman); and Behavioral Biology, Faculty of Medicine, Technion (Dr Pratt), Haifa, Israel.
Footnotes
Accepted for publication Sept 14, 1983.
Reprint requests to Department of Otolaryngology, Carmel Hospital, 7 Michal St, Haifa 34 362, Israel (Dr Uri).
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