Indian Journal of Otology

ORIGINAL ARTICLE
Year
: 2012  |  Volume : 18  |  Issue : 2  |  Page : 72--75

Electrocochleography in individuals with Meniere俟Q製 disease


Prawin Kumar1, Pallavi Peepal2 
1 Department of Audiology, All India Institute of Speech and Hearing, Mysore, India
2 Audiology section, Phonak Pvt Ltd, New Delhi, India

Correspondence Address:
Prawin Kumar
Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Mysore - 570006, Karnataka
India

Background: Electrocochleography (ECochG) is a useful tool helping in the diagnosis of Meniere俟Q製 disease (MD). Extra-tympanic ECochG is a non-invasive technique to record the amplitude of summating potential (SP) alone or the amplitude ratio of SP and action potential (AP). Objectives: The present study was aimed to measure the SP and AP amplitudes alone and the ratio (SP/AP) in individuals with normal hearing and in those with MD. Materials and Methods: A total of 63 ears from 34 individuals with normal hearing and those with MD were selected for the study. Individuals with MD had hearing impairment in the range of mild to moderate sensorineural hearing loss. Extra-tympanic non-invasive ECochG recording was done for all the participants. Results: The results of the study revealed that in individuals with normal hearing, 75.75% of the individual ear had SP responses noticeable, whereas in individuals with MD, only 46.66% had SP waveforms present. Further, the mean latency and amplitude of SP were found to be 0.93 msec and 0.29 μV, respectively, in Meniere俟Q製 ear, whereas in normal ears, they were 0.64 msec and 0.11 μV, respectively. In addition to that, a significant difference in SP/AP amplitude ratio between individuals with normal hearing and those with MD was also reported. Conclusion: Therefore, from the present study one can conclude that the SP values increase both in terms of latency and amplitude in pathological condition. Also, it can be concluded that SP/AP amplitude ratio can help in differentiating individuals with MD from individuals with normal hearing.


How to cite this article:
Kumar P, Peepal P. Electrocochleography in individuals with Meniere's disease.Indian J Otol 2012;18:72-75


How to cite this URL:
Kumar P, Peepal P. Electrocochleography in individuals with Meniere's disease. Indian J Otol [serial online] 2012 [cited 2021 Apr 15 ];18:72-75
Available from: https://www.indianjotol.org/article.asp?issn=0971-7749;year=2012;volume=18;issue=2;spage=72;epage=75;aulast=Kumar;type=0