Vestibular Evoked Myogenic Potentials in Sudden Hearing LossShow others and affiliations
2006 (English)In: Skull base, ISSN 1052-1453, E-ISSN 1532-0065, Vol. 16, no S 2, article id A014Article in journal, Meeting abstract (Refereed) Published
Abstract [en]
Aims: Vestibular evoked myogenic potentials (VEMPs) are short-latency electromyograms recorded from the ipsilateral tonically contracting sternocleidomastoid muscle in response to loud clicks or tone-bursts. It is reported that this reflex is generated via a disynaptic pathway, beginning in the saccule. The purpose of the study is to investigate the VEMPs in cases of sudden hearing loss.
Materials and Methods: Twelve patients with unilateral idiopathic sudden hearing loss were subjected to pure tone audiometry, acoustic immittance testing, caloric testing, auditory brainstem responses, and VEMP testing. A group of healthy volunteers was also enrolled. VEMP responses were measured and compared to caloric responses.
Results: VEMPs were present in all normal subjects and ipsilaterally normal on the unaffected side in all patients with sudden hearing loss. Five out of 12 patients displayed abnormal VEMPs (41.6%) on the affected side (in 4 cases were absent, in 1 case delayed) and 4 of them demonstrated decreased canal paresis, while the fifth had normal caloric responses. In 5 patients both electronystagmographic findings and VEMPs were normal, while the remaining 2 patients showed normal VEMP test results but abnormal caloric responses.
Conclusion: Most of the patients displayed normal VEMPs. However, in a considerable number of cases they were abnormal. Also, in the majority of patients, VEMPs correlated to the caloric responses, although in 3 patients either the superior or the inferior vestibular nerve was involved.
Place, publisher, year, edition, pages
Georg Thieme Verlag , 2006. Vol. 16, no S 2, article id A014
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:oru:diva-82813DOI: 10.1055/s-2006-958548OAI: oai:DiVA.org:oru-82813DiVA, id: diva2:1437364
Conference
International Congress of Rhinology-Otology & Skull Base Surgery, Astir Palace Resort, Vouliagmeni, Athens, Greece, August 31 – September 3, 2006
2020-06-092020-06-092020-06-09Bibliographically approved