View clinical trials related to Deafness.
Filter by:Hearing loss is one of the most common health concerns affecting 1 in 3 Americans over 60 years of age rising to 1 in 2 for those over 85 years old. Contributions to hearing abilities provided by cognitive and memory processes are universally recognized as essential to adequate speech communication, but these processes are not well understood. Cognitive limitations in the ability to rapidly process sequential sounds occur with all listeners but may have more impact on older Veterans with and without hearing impairment. The purpose of this study is to examine and more thoroughly characterize the change in auditory working memory with hearing loss and increasing age. Young and older listeners with and without hearing loss will listen and report on two target sounds embedded in a stream of rapidly occurring sound. The investigators expect that older listeners without hearing loss will have more difficulty than young listeners but that older listeners with hearing impairment will have the most difficulty with this task even when the sounds they are listening to are adjusted to compensate for their hearing loss.
The clinical use of genetic testing is expanding and, as a result, the number of variants identified in patients is growing. Knowledge of the clinical impact of these variants improves over time. However, the combination of more testing and the rapid evolution of genetic knowledge make it impossible for clinicians to fully account for the latest implications of their patients' genetic profiles as patient care decisions are made. This proposed study plans to enhance and evaluate IT infrastructure developed to provide timely genetic variant updates and patient search functionality to clinicians to assist in optimizing patient care.
Congenital hypothyroidism (CH) occurs in 1:4000 live births. Neurological disturbances like speech delay, motor delay and lower IQ were reported in children with CH. Evidence from animal experiments indicate that CH is associated with high frequency of deafness. Morphological changes of the external and internal cholera hairs were reported in mutagenic mice with CH. Anatomical changes of the internal ear and low hearing threshold were reported in mice bearing Dual oxidase 2 (Duox2) gene mutations, which is responsible of oxidation of iodide. Knockout of Pax8 gene in mice resulted in both agenesis of thyroid gland and deafness. Early L-thyroxin therapy prevented the development of deafness in those mice. The expression of thyroid receptor α (TRα) in the external and internal cholera hairs in mice indicates that the thyroid hormones have an important role in the development of the internal ear. The etiology of deafness in human is both genetic and environmental. The prevalence of deafness in live births is 1:1000 and among them 60% is genetic. Connexin 26 gene mutations are the most common cause of inherited deafness and account for about 40% of the genetic cases. In two conditions in human the coexistence of hypothyroidism and deafness were reported; Pendred syndrome and thyroid hormone resistance syndrome. The prevalence of hearing loss in human with CH was explored in only few studies and the results are contrary. The aim of the current study is to study the prevalence of hearing loss among children with CH and to compare the clinical, biochemical and genetic characteristics between subjects with hearing loss to those without hearing loss.
A randomized controlled study with hearing impaired workers, who have voluntarily signed up for an 8 session cognitive therapy (CBT) course The CBT intervention will be compared to a waiting list control group. Participants who are allocated to the intervention group will be offered to start on the CBT-course immediately, while the control group that will be offered the same course 12 months later. Main outcome measures are assessments of mental distress and vocational coping. We will also assess the distress associated with tinnitus, which is a potential moderator variable.
The ASK CHILDREN study is intended to aid in future development of various neurologic devices (i.e. neuroprostheses). The ASK CHILDREN study seeks to use study information obtained to identify more efficient strategies in the evaluation and review of neuroprostheses regulated by the Agency.
The standard of care treatment of sudden hearing loss uses a type of steroid called glucocorticoid. Examples of glucocorticoids are prednisone, methylprednisolone and dexamethasone. Not everybody recovers hearing with glucocorticoid treatment. Fludrocortisone is a different type of steroid called mineralocorticoid. Unlike glucocorticoids, which work by reducing inflammation, mineralocorticoids work by changing salt and fluid balance. In animal studies, fludrocortisone is at least as effective as glucocorticoid in preserving hearing. Fludrocortisone is not approved for the treatment of sudden hearing loss. The purpose of this study is to test whether fludrocortisone can treat sudden hearing loss.
This study will look at the feasibility and acceptability of testing newborn babies who are referred after their newborn hearing screen for an infection called congenital Cytomegalovirus (cCMV). Around 1 in every 100 to 200 babies is born with this virus, and although most remain well it causes 1 in 5 cases of childhood deafness. Knowing that a baby is infected shortly after birth could have significant benefit since a treatment is now available, but screening programs need to be feasible and acceptable. This study aims to evaluate targeted screening for cCMV by taking samples (saliva and urine) from babies who do not pass their newborn hearing screening. The investigators want to see if we can find a quick, reliable and parentally acceptable way to screen babies who fail their hearing test for this virus.
The aim of this study is to investigate short and long term consequences from early postnatal HCMV infection transmitted via human milk in very preterm infants (birth weight < 1500 g or gestational age < 32 weeks). These infants are at high risk of early death or survival with chronic disease and neurodevelopmental impairment if infected with HCMV. Infection is a common complication in this group of patients and reported to be the most frequent cause of death after the second week of life. Systemic infection in the newborn period is reported as representing an independent risk factor for survival with neurodevelopmental impairment among very preterm infants.
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.
There are no differences between the exams made with the new device,that evaluates the hearing, and the device gold standard, that is widely used in clinics and hospitals.