Iranian Journal of Otorhinolaryngology

Iranian Journal of Otorhinolaryngology

Relationship between Electrically Evoked Compound Action Potential Thresholds and Auditory, Language, and Speech Progress after Cochlear Implant Surgery

Document Type : Original

Authors
Masoud Motesadi Zarandi 1
Navid Nourizadeh 2
Farzad Mobedshahi 3
Sadegh Jafarzadeh 4
1 Department of Ear, Nose and Throat, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
2 Sinus and Surgical Endoscopic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
3 Amir Alam Hospital, Tehran University of Medical Sciences, Tehran, Iran.
4 Department of Audiology, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.
10.22038/ijorl.2018.28863.1947
Abstract
Introduction:
Electrically evoked compound action potential (ECAP) is an objective auditory response that can be used in the programing of cochlear implants. The aims of this study were to monitor ECAP thresholds and auditory, language and speech progress for 6 months after cochlear implant surgery and to evaluate any relationship between them.
 
Materials and Methods:
Ten children with a mean age of 4.2 (±0.6) years and bilateral congenital and profound sensorineural hearing loss underwent cochlear implant surgery and post-operation auditory and speech training. The auditory, language, and speech abilities (Newsha level) and ECAP thresholds (for apical, medial and basal region of cochlea) were evaluated 1, 3 and 6 months after surgery.
                                                                                                                          
Results:
ECAP threshold showed no significant improvement in any of the evaluated areas in the 6 months after surgery (P>0.05); however, the Newsha level improved for all patients (P=0.00).
 
Conclusion:
There was no relationship between ECAP thresholds and auditory, language, and speech abilities (Newsha level) in the first 6 months after surgery. ECAP thresholds may be a poor indicator of improvement in auditory, language, and speech abilities, and depend on many factors.
Keywords
Cochlear Implant
Electrically evoked compound action potential
Neural response telemetry
Newsha
Subjects
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Iranian Journal of Otorhinolaryngology
Volume 30, Issue 4 - Serial Number 99
July and August 2018
Pages 185-188