vestibular evoked myogenic potential produced by bone-conducted stimuli: a study on its basics and clinical applications in patients with conductive and sensorineural hearing loss and a group with vestibular schawannoma

نویسندگان

parvane mahdi department of audiology, faculty of rehabilitation. tehran university of medical sciences, tehran, iran.

amin amali department of otorhinolaryngology-head and neck surgery, imam khomeini educational complex hospital, tehran university of medical sciences, tehran, iran.f otorhinolaryngology-head and neck surgery, imam khomeini educational complex hospital,

akram pourbakht rehabilitation research center, department of audiology, tehran university of medical sciences, tehran, iran.

alireza karimi yazdi department of otorhinolaryngology-head and neck surgery, imam khomeini educational complex hospital, tehran university of medical sciences, tehran, iran.

چکیده

introduction: vestibular evoked myogenic potential (vemp) has recently been broadly studied in vestibular disorders. as it is evoked by loud sound stimulation, even mild conductive hearing loss may affect vemp results. bone-conducted (bc) stimulus is an alternative stimulation for evoking this response. this study aims to assess the characteristics of bc-vemp in different groups of patients.   materials and methods: we performed a cross sectional analysis on 20 healthy volunteers with normal pure-tone audiometry as a control group; and on a group of patients consisted of 20 participants with conductive hearing loss, five with bilateral sensorineural hearing loss and four with vestibular schawannoma. ac and bc-vemp were performed in all participants.   results: in control group the vemp responses to both kinds of stimuli had an acceptable morphology and consisted of p13 and n23 waves. latency value of these main components in each type of stimulus was not significantly different (p>0.05). however, the mean amplitude was larger in bc modality than ac stimulation (p=0.025). in the group with conductive hearing loss, the vemp response was absent in fifteen (46.87%) of the 32 ears using the ac method, whereas all (100%) displayed positive elicitability of vemp by bc method. normal vemp responses in both stimuli were evoked in all patients with sensorineural hearing loss. in patients with unilateral vestibular schwannomas (vs), 2 (50.00%) had neither ac-vemp nor bc-vemp. conclusion:  auditory stimuli delivered by bone conduction can evoke vemp response. these responses are of vestibular origin and can be used in vestibular evaluation of patients with conductive hearing loss.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Vestibular Evoked Myogenic Potential Produced by Bone-Conducted Stimuli: A Study on its Basics and Clinical Applications in Patients With Conductive and Sensorineural Hearing Loss and a Group With Vestibular Schawannoma

Introduction: Vestibular evoked myogenic potential (VEMP) has recently been broadly studied in vestibular disorders. As it is evoked by loud sound stimulation, even mild conductive hearing loss may affect VEMP results. Bone-conducted (BC) stimulus is an alternative stimulation for evoking this response. This study aims to assess the characteristics of BC-VEMP in different groups of patients.   ...

متن کامل

Vestibular Evoked Myogenic Potential Produced by Bone-Conducted Stimuli: A Study on its Basics and Clinical Applications in Patients with Conductive and Sensorineural Hearing Loss and a Group with Vestibular Schawannoma

INTRODUCTION Vestibular evoked myogenic potential (VEMP) has recently been broadly studied in vestibular disorders. As it is evoked by loud sound stimulation, even mild conductive hearing loss may affect VEMP results. Bone-conducted (BC) stimulus is an alternative stimulation for evoking this response. This study aims to assess the characteristics of BC-VEMP in different groups of patients. M...

متن کامل

Vestibular evoked myogenic potentials (VEMPs) evoked by air- and bone-conducted stimuli in vestibular neuritis

OBJECTIVE To compare and characterise abnormalities for short latency vestibular evoked myogenic potentials (VEMPs) elicited by air- (AC) and two differing types of bone-conducted (BC) stimuli during vestibular neuritis (VN). METHODS AC (500Hz short tone bursts) and two BC stimuli (500Hz at the forehead and impulses at the mastoids) were used to evoke cervical and ocular potentials (cVEMPs an...

متن کامل

Vestibular evoked myogenic potentials in patients with rheumatoid arthritis

  Background: Rheumatoid arthritis (RA) is an autoimmune systemic disease. Most common autoimmune diseases are multisystem disorders that may also present with otological manifestations, and autoimmune inner ear disease accompanied by vestibular dysfunction. This study aimed to compare the vestibular function between RA patients and normal subjects using cervical vestibular evoked myogenic...

متن کامل

Vestibular evoked myogenic potential: its use in Sudden Sensorineural Hearing Loss.

INTRODUCTION Sudden sensorineural hearing loss (SHL) has uncertain origin and evolution. Vestibular evoked myogenic potential (VEMP) estimates of the vestibular pathway that can not be analyzed by the other entrance examinations, which can be helpful in diagnosing the extent of hearing damage in these patients. OBJECTIVES To investigate the clinical applicability of VEMP in patients with SHL....

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
iranian journal of otorhinolaryngology

جلد ۲۵، شماره ۳، صفحات ۱۴۱-۱۴۶

کلمات کلیدی

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023