Objective Measures in Cochlear Implant
2017年8月22日 更新者:Dina Mohamed、Assiut University
Objective Measures in Cochlear Implant in Children and Its Correlation to Outcome
One of the main factors affecting the ability to maximize the full potential of a cochlear implant is an accurate map.The goal of mapping is to enable cochlear implant recipients to perceive a desired range of acoustic signals.
The process includes programming of the minimum and the maximum stimulation levels that are based on subjective measurements of thresholds and the most comfortable level .
The use of objective measures in the CI process has greatly contributed to the definition of the dynamic field, as they provide specific values that serve as the basis for the start of the mapping process, especially in cases of infants and young children.
Some examples of these measures are electrically evoked stapedius reflex threshold , neural response telemetry , brainstem auditory evoked potential , and P300, among others.
調査の概要
状態
わからない
条件
詳細な説明
In adult Cochlear implant users, programming is a relatively straightforward task as psychophysical measurements can be explained, and patients quickly understand the link between the mapping process and the output of their system .
In young children or infants, the mapping process is more complex, especially comfort levels.
Setting the threshold level requires the child to respond to the presence or the absence of a sound.
Although the same techniques are used in setting the comfort level, the child is now required to make a judgment about the sound beyond its simple presence or absence.
Young children often lack the attention span, patience, and cognitive and language skills necessary to perform these tasks with good reliability and repeatability .The use of objective measures in the CI process has greatly contributed to the definition of the dynamic field, as they provide specific values that serve as the basis for the start of the mapping process, especially in cases of infants and young children.
Some examples of these measures are electrically evoked stapedius reflex threshold , neural response telemetry , brainstem auditory evoked potential , and P300, among others.The electrically evoked compound action potentials, which are closely related to the electrically evoked brainstem responses, would also show a similar correlation with the behavioral threshold .
Determining threshold levels requires subjective responses to a series of sophisticated psychophysical percepts.
This is often difficult for cochlear implant patients.
However, the neural response telemetry system renders possible the measurement of the compound action potential threshold .
Electric stapedial reflex threshold measurements are performed using the same software platform and electrical stimulus utilized for fitting the cochlear implant .
Thus, stimulus parameters, including pulse duration and repetition rate, can be identical to those used to obtain behavioral judgments for psychophysical levels .For most implant recipients , even the first introduction of electric stimulation from a cochlear implant evokes activity in the auditory brainstem , which can be measured as clear electric auditory brain stem response waveforms .
Therefore this test can be used in the functional evaluation of the auditory system between the time of initial implant activation and after chronic cochlear implant use.
研究の種類
観察的
入学 (予想される)
30
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
2年~6年 (子)
健康ボランティアの受け入れ
いいえ
受講資格のある性別
全て
サンプリング方法
確率サンプル
調査対象母集団
children with sensorineural hearing loss implanted with Medel multi-channel cochlear implant aged 2-6 years
説明
Inclusion Criteria:
- children implanted with Medel multichannel cochlear implant
Exclusion Criteria:
• Any middle ear problem
- Any technical problems with the cochlear implant device
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
研究はどのように設計されていますか?
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
---|---|
children with cochlear implant
30 subjects whose age ranges from 2-6 years old who are implanted with Medel multichannel cochlear implant male and female will be included and will undergo:-
|
The electrically evoked compound action potentials, which are closely related to the electrically evoked brainstem responses, would also show a similar correlation with the behavioral threshold.
Determining threshold levels requires subjective responses to a series of sophisticated psychophysical percepts.
This is often difficult for cochlear implant patients.
However, the neural response telemetry system renders possible the measurement of the compound action potential threshold .
electric stapedial reflex threshold measurements are performed using the same software platform and electrical stimulus utilized for fitting the cochlear implant .
Thus, stimulus parameters, including pulse duration and repetition rate, can be identical to those used to obtain behavioral judgments for psychophysical levels
For most implant recipients , even the first introduction of electric stimulation from a cochlear implant evokes activity in the auditory brainstem , which can be measured as clear electric auditory brain stem response waveforms .
Therefore the electric auditory brain stem response test can be used in the functional evaluation of the auditory system between the time of initial implant activation and after chronic cochlear implant use
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
---|---|---|
Arabic language test
時間枠:2 years
|
Speech and language assessment in children with cochlear implant
|
2 years
|
協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
スポンサー
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (予想される)
2017年12月1日
一次修了 (予想される)
2019年8月31日
研究の完了 (予想される)
2019年12月30日
試験登録日
最初に提出
2017年8月20日
QC基準を満たした最初の提出物
2017年8月22日
最初の投稿 (実際)
2017年8月24日
学習記録の更新
投稿された最後の更新 (実際)
2017年8月24日
QC基準を満たした最後の更新が送信されました
2017年8月22日
最終確認日
2017年8月1日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。