Active clinical trials for "Hearing Loss, Noise-Induced"

Each year, military epidemiological surveillance counts approximately 1,000 acute acoustic injuries. Most are caused by exposure to weapon noise during training sessions while military personnel are provided with hearing protection. Several hypotheses could explain the occurrence of acute acoustic trauma despite wearing protections: A lack of practices or knowledge about the use of hearing protection equipment that could facilitate the occurrence of acute acoustic trauma (improper fitting, use of an inappropriate type of protection, dropping of protectors, inappropriate removal) A failure to seal the external ear canal due to an inappropriate plug size. These hypotheses will be explored using a questionnaire distributed to a population of Army soldiers training to shoot. The main objective is to determine the predictive factors corresponding to practices or knowledge related to the use of hearing protection equipment in the occurrence of acute acoustic trauma in a population of Army soldiers.

As part of the proposed work, the investigators would like to examine whether there is a need to use a training video to train IDF combat soldiers to improve the use of ear plugs and to prevent hearing loss from exposure to noise, and to characterize the hearing impaired epidemiology of recruits and the basic rate of hearing loss During basic training.

Acute acoustic trauma is a growing concern in the IDF. there is currently no accepted treatment. The present retrospective study is intended to evaluate the efficacy of different treatment modalities in the IDF between 01/01/2010 and 15/06/2020.

The aim of the research: Investigate the association of auditory evoked brainstem response characteristics with salivary cortisone concentrations in noise-exposed workers. Purpose of the research: Investigate the magnitude of the amplitudes and latencies of auditory brainstem responses. Investigate the concentration of cortisone in saliva. To investigate the correlation of the characteristics of auditory evoked brainstem potentials with the age of the subjects or the length of work in noise. Investigate the association of salivary cortisone concentration with subjects' age or length of work in noise. Investigate the prevalence of mild, moderate and severe hearing impairment in the 19-35 age group. Investigate the relationship of hearing threshold shift with the age of the subjects or the length of work in noise. To investigate the difference in the characteristics of auditory evoked brainstem potentials and the difference in salivary cortisone concentration between subjects with a bilaterally normal hearing threshold (≤25 dB) at high frequencies and subjects with unilaterally or bilaterally increased hearing threshold (> 25 dB) at high frequencies . Investigate the perceived stress and psychosocial risk factors in the workplace and their relationship to salivary cortisone concentrations. Research Hypothesis: There is an association between the characteristics of auditory evoked brainstem response and salivary cortisone concentrations in noise-exposed workers. Research participants Inclusion criteria: male and female ages 19-35 exposure to noise level ≥ 85 dB (A) per week at the workplace work in noise from 1 to 16 years workplace not involving exposure to carbon disulfide or a mixture of organic solvents that have toxic effects on the ear (toluene, xylene and styrene) unilaterally or bilaterally normal otoscopic findings unilaterally or bilaterally tympanogram: peak pressure value ± 50 daPa at 226 Hz with eardrum mobility of 0.3 to 1.3 mL Exclusion criteria: information about an earlier sudden hearing loss information on chronic middle ear inflammation information on ear surgery (except placement of ventilation tubes in the eardrum) information on dizziness associated with hearing loss and noise information on insomnia current use of oral corticosteroids bilaterally found air-bone gap greater than 15 dB