Prevention of Noise-induced Damage by Use of Antioxidants
|ClinicalTrials.gov Identifier: NCT01727492|
Recruitment Status : Unknown
Verified November 2013 by Ethisch Comité UZ Antwerpen, University Hospital, Antwerp.
Recruitment status was: Recruiting
First Posted : November 16, 2012
Last Update Posted : November 6, 2013
|Condition or disease||Intervention/treatment||Phase|
|Noise-induced Tinnitus Noise-induced Hearing Loss||Drug: Antioxidantia||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||30 participants|
|Intervention Model:||Crossover Assignment|
|Masking:||Double (Participant, Investigator)|
|Study Start Date :||November 2012|
|Placebo Comparator: sugar pill|
Active Comparator: Antioxidantia
Dosage: 600mg n-acetylcystein and 200mg magnesium intake: 1 hour before leisure noise exposure above 100dB of at least 30 minutes frequency: 4 separate events (2x placebo, 2x antioxidants)
- Protection against noise-induced tinnitus due to antioxidants
Antioxidants protect against temporary threshold shift. The most prevalent cause of noise-induced tinnitus is noise-induced hearing loss. Therefore, it is assumed that the preventive intake of antioxidants prior to a loud event, might protect against threshold shift as well as noise-induced tinnitus.
A 50% decrease of tinnitus loudness scored on a Visual Analogue Scale (VAS) compared to placebo trials is expected.
- Change of tinnitus durationIt is expected that with the intake of antioxidants noise-induced tinnitus is prevented or reduced after loud music exposure. In addition, it is expected that the tinnitus persistence is shortened compared to the placebo arm.
- Decrease of temporary threshold shift in antioxidant trials compared to placebo trialsA limited number of participants will have audiological testing (audiometry including high frequency audiometry, speech-in-noise testing and otoacoustic emissions) prior to the musical event as well as the morning after noise exposure in order to measure the effects of antioxidants on the hearing thresholds and hearing performance.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01727492
|Contact: Annick Gilles, Master||32 3 821 52 firstname.lastname@example.org|
|Antwerp University Hospital||Recruiting|
|Antwerp, Edegem, Belgium, 2650|
|Contact: Annick Gilles, Master 32 821 32 57 email@example.com|
|Sub-Investigator: Annick Gilles, Master|