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Preoperative Variables Affecting Outcome Of Cochlear Implant

2018-10-30 14:05:14 | BioPortfolio

Summary

Cochlear implants (CIs) represent one of the most important achievements of modern medicine as, for the first time in history, an electronic device is able to restore a lost sense - hearing. As of December 2012, approximately 324,200 cochlear implants have been implanted worldwide. In the United States, roughly 58,000 devices have been implanted in adults and 38,000 in children .

The aim of this study is to assess the factors affecting the audiological, speech and language outcomes achieved by the recipients of multi-channel cochlear implants.

Description

Cochlear implants (CIs) represent one of the most important achievements of modern medicine as, for the first time in history, an electronic device is able to restore a lost sense - hearing. As of December 2012, approximately 324,200 cochlear implants have been implanted worldwide. In the United States, roughly 58,000 devices have been implanted in adults and 38,000 in children .

Cochlear implantation is a powerful tool for helping children with severe to profound sensorineural hearing loss to gain the ability to hear, and to achieve age appropriate communication skills. Evaluating the development of auditory, speech, language skills and the personality of implanted child is useful for the parent, the teacher, the therapist, and the subsequent rehabilitation progress .

However the final outcome in pediatric implantation is yet not entirely predictable as there are a large number of factors which alone or in combination will decide the outcome of cochlear implantation.

Categorizing these determinants increases the ability of clinicians to offer educated preoperative prognosis and might potentially allow for manipulation of variables in an attempt to achieve the best possible outcome .

Before implantation, a trial period with appropriate amplification combined with intensive auditory training should be attempted to ensure that maximal benefit is achieved.

Several factors have been reported to have an impact on the ability of prelingually deaf children to develop oral language skills after cochlear implantation. The most important and consistently reported variable that influences the ability to use auditory-only communication is the age at which the child is implanted .

Communication mode after implantation has also been frequently reported to be a factor that contributes to final speech and language outcome, with oral-only communication producing speech and language results superior to those observed in children who use a combination of sign and spoken language (total communication).

The wide range of speech perception abilities exhibited by cochlear implant recipients may depend in part upon differences in the central auditory processing abilities of implant users. One way to assess central auditory function in these individuals is to measure speech evoked cortical potentials. In particular, measuring cortical potentials that reflect auditory discrimination may provide insight into the central mechanisms underlying speech perception .

Moreover, if those cortical potentials can be recorded from cochlear implant users, comparing the potentials to the responses measured in normal listeners should indicate whether the brain's response to speech mediated by a cochlear implant is similar to the brain's response to speech processed by a normal cochlea. From a theoretical standpoint, the presence of cortical potentials in cochlear implant users may provide a unique window to viewing the central auditory system.

Aim of the study:

The aim of this study is to assess the factors affecting the audiological, speech and language outcomes achieved by the recipients of multichannel cochlear implants.

Study Design

Conditions

Speech Cortex Disorder

Intervention

Cochlear implant

Status

Not yet recruiting

Source

Assiut University

Results (where available)

View Results

Links

Published on BioPortfolio: 2018-10-30T14:05:14-0400

Clinical Trials [1946 Associated Clinical Trials listed on BioPortfolio]

Cochlear Implant Speech and Non-speech Sound Recognition

The primary purpose of the research is to study how synthesized speech and non-speech percepts (sounds) are recognized in subjects with cochlear implants (CI) who are not getting functiona...

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Iowa Cochlear Implant Clinical Research Center Study of SSD Using Med-El Cochlear Implants

The purpose of this study is to understand the speech perception in noise and in quiet and localization benefits in a laboratory setting in listeners that receive a cochlear implant in an ...

PubMed Articles [8009 Associated PubMed Articles listed on BioPortfolio]

Restoration of cortical symmetry and binaural function: Cortical auditory evoked responses in adult cochlear implant users with single sided deafness.

Cochlear implantation for single-sided deafness (SSD) is the only treatment option with the potential to restore binaural hearing cues. Significant binaural benefit has been measured in adults by spee...

Imaging of the Inner Ear Before Cochlear Implantation.

If sufficient speech understanding can no longer be achieved with conventional hearing aids, the indication for a cochlear implant is very often present. Imaging plays an important preoperative role, ...

Cochlear implant outcomes in children with attention-deficit/hyperactivity disorder: Comparison with controls.

The coincidence of attention-deficit/hyperactivity disorder (ADHD) and hearing loss in the children has adverse effects in speech, cognition, communication and motor development. This can influence co...

A psychoacoustic application for the adjustment of electrical hearing thresholds in cochlear implant patients.

Fitting cochlear implants, especially the precise determination of electrical hearing thresholds, is a time-consuming and complex task for patients as well as audiologists. Aim of the study was to dev...

How Does Quality of Life Relate to Auditory Abilities? A Subitem Analysis of the Nijmegen Cochlear Implant Questionnaire.

Objective speech recognition tasks are widely used to measure performance of adult cochlear implant (CI) users; however, the relationship of these measures with patient-reported quality of life (QOL) ...

Medical and Biotech [MESH] Definitions

The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. They mediate the sense of hearing.

The brain stem nucleus that receives the central input from the cochlear nerve. The cochlear nucleus is located lateral and dorsolateral to the inferior cerebellar peduncles and is functionally divided into dorsal and ventral parts. It is tonotopically organized, performs the first stage of central auditory processing, and projects (directly or indirectly) to higher auditory areas including the superior olivary nuclei, the medial geniculi, the inferior colliculi, and the auditory cortex.

Persistent difficulty with speech sound production such that it interferes with verbal communication.

Procedures for assisting a person with a speech or language disorder to communicate with maximum efficiency.

Hearing loss due to disease of the AUDITORY PATHWAYS (in the CENTRAL NERVOUS SYSTEM) which originate in the COCHLEAR NUCLEI of the PONS and then ascend bilaterally to the MIDBRAIN, the THALAMUS, and then the AUDITORY CORTEX in the TEMPORAL LOBE. Bilateral lesions of the auditory pathways are usually required to cause central hearing loss. Cortical deafness refers to loss of hearing due to bilateral auditory cortex lesions. Unilateral BRAIN STEM lesions involving the cochlear nuclei may result in unilateral hearing loss.

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