View clinical trials related to Hearing Impairment.
Filter by:This community-based cross-sectional survey will estimate the frequency and risk factors of Chronic Suppurative Otitis Media and Hearing Impairment in Children ages 4-6 years in the Chikwawa District. These data will be useful for service planning, disease prevention efforts and to guide future research in this field.
Before they are born, babies are protected from hearing very loud noises by their mother's bodies. After delivery, they are exposed to many loud noises that are potentially harmful. These noises happen in the neonatal intensive care unit (NICU). The purpose of this research project is to test the fit and the ease-of-use of a new device that may protect infant's hearing in the NICU.
The purpose of this study is to study blast-exposed Veterans who report hearing handicap but show normal or near normal results on standard audiometric testing. The characteristics and nature of their auditory and auditory-related skills will be examined, along with whether coexisting PTSD contributes to the hearing problems of these Veterans. In a preliminary treatment study, a sub-sample of these Veterans will be fitted with mild-gain hearing aids to determine if they benefit from low-level amplification of high-frequency sounds.
Computer-assisted speech training is a speech recognition training system developed for cochlear implant users. With minimal facilities and skills, cochlear implant users can conduct this training at home. The purpose of this study was to apply this system to adolescent and young adult hearing aid users with prelingual severe to profound hearing loss.
The EarLens System is an assistive hearing device that is intended to provide amplification for the treatment of patients with sensorineural hearing impairment. The purpose of this multi-center definitive study is to assess the safety and efficacy of the EarLens System for subjects with bilateral mild to severe sensorineural hearing impairments wearing the fully activated system in their daily lives for a 4 month period of time. This study is designed to support US and International marketing applications to commercialize the EarLens System. The main efficacy hypothesis is that the EarLens System will be shown to improve speech understanding in quiet.
The AGE (Active Geriatric Evaluation) aims to develop a brief assessment tool adapted to the primary care setting.
Objectives: To assess a group of post-lingually children after 10 years of implantation with regard to speech perception, speech intelligibility, and academic/occupational status. Study Design: A prospective transversal study. Setting: Pediatric referral center for cochlear implantation. Patients: Ten post-lingually deafened children with Nucleus and Med-El cochlear implants. Interventions: Speech perception and speech intelligibility tests and interview. Main Outcome Measures: The main outcome measures were score of Hint sentences recognition (silence and noise), speech intelligibility scores(write-down intelligibility and rating scale scores) and academic/ occupational status.
Purpose: to investigate the relationship between time for treatment seeking and audiometric data and self-assessment of handicap for patients in a public hearing healthcare service. Methods: Retrospective study. Records of 152 elderly and 48 adults with hearing impairment were analyzed. The ISO audiometric thresholds average (500 to 4000Hz) and high frequencies average (2000 to 6000Hz), the speech recognition thresholds and the total, social and emotional scores from the Hearing Handicap Inventory for the Adults (HHIA) and Elderly (HHIE) were compared with the time between the onset of hearing complaints and the first treatment seeking. Results: The average time for treatment seeking was 7,6 years. No statistical difference was found between ISO and high frequency audiometric average, HHIA/E scores and time for treatment seeking between adults and the elderly. Weak but significant negative correlations were observed between the audiometric data and time for treatment seeking. There was no relationship between the time for treatment seeking and educational, socioeconomic levels and perception of handicap. Conclusions: The search for treatment seems to be multifactorial. Despite technological advances and changes in access to information and treatment time for treatment seeking was similar to that reported 30 years ago.
Hearing impairment is a common disorder that affects at least 7% of individuals in our countries. Even the causes of hearing impairment are numerous, genetic causes represent the main factor of sensorineural deafness. Among hereditary non-syndromic deafness autosomal-dominant inheritance is observed in about 10-20% of the cases. These forms of deafness are usually post-lingual and progressive. To date more than 41 chromosomal localisation and 21 genes associated to non syndromic dominant deafness have been described. It represents an extreme genetic heterogeneity making difficult the studies of these forms of hearing impairment. But, genetic diagnostic testing is crucial in these cases. Indeed, therapeutic research are in the way to prevent the progression of the disorder. The aim of this work is to establish the prevalence of the different genes involved in these forms of deafness.
Wind-noise is highly disturbing to hearing impaired individuals wearing hearing aids who wish to participate in outdoor conversations where wind is present or during activities such as walking or running. In these situations, wind noise significantly reduces signal-to-noise ratio and, consequently, the intelligibility of speech and sounds may be significantly impaired. This negative effect is exacerbated with the use of directional microphone schemes in the hearing iads. The objective of this project is to determine the efficacy of the MH Acoustics' multi-microphone wind-noise reduction invention for the digital hearing aids market. MH Acoustics' wind noise reduction technology is unique since it provides instantaneous convergence while maintaining directionality of the microphone array. Current commercial technologies do not provide this feature. We are hypothesizing that, due to the design of the algorithm, speech perception ability and sound quality perception will be better than that available with traditional directional and/or omnidirectional microphone schemes in windy environments.