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Author: admin, 28.02.2014
Tinnitus in combination with hearing loss may be caused by genetic changes and may become curable with gene therapy in the future, say Australian scientists.
Tinnitus resulting from hyperactive nerve cells in the sound processing parts of the brain often accompany one-sided hearing loss. Faca nosso teste online gratuito de perda auditivaComo perda auditiva e tinnitus se apresentam? To play the media you will need to either update your browser to a recent version or update your Flash plugin. Singapore General Hospital (SGH) is Singapore's flagship hospital offering comprehensive range of medical specialties and services for our patients spanning over two centuries. When Madam Kartina Tan, 63, suffered sudden one-sided hearing loss in her left ear in May, her tinnitus, which she had suffered from for years, worsened.
In crowded places, she could not pinpoint where sounds came from, which made her feel disoriented.
In August, she received a cochlear implant, which was approved for use in patients with one-sided hearing loss in the European Union in April. Before this, cochlear implants were approved for use only in people with hearing loss in both ears. It was deemed that a person with one-sided hearing loss could still hear with his remaining good ear and make use of other hearing devices, said doctors. But recent European studies showed that the implant was also useful for people with hearing loss on one side, especially if they suffered tinnitus as well. In Singapore, the implant can now be inserted on a case-by-case basis for people with one-sided profound hearing loss, after they have discussed with doctors whether the pros of the device outweigh the cons, said Associate Professor Lynne Lim, senior consultant at the department of otolaryngology – head and neck surgery at the National University Hospital. She implanted the device in two people with one-sided hearing loss, a foreigner and a Singaporean, in 2011 and last year.
Ear, nose and throat specialist Low Wong Kein at Mount Elizabeth Novena Hospital has also put in a cochlear implant each for two people who each lost their hearing in one ear – Madam Tan and another patient (see other story). When the hearing loss struck her, Madam Tan, an Indonesian housewife, saw doctors in Surabaya, but they could do nothing for her. A doctor in Jakarta did a magnetic resonance imaging scan, which showed nothing wrong with the ear structure and no abnormal growths.
He thought it likely that she had a viral infection, which is the leading cause of severe sudden hearing loss.
To reduce any inflammation from an infection, he gave her two steroid injections through the ear drum. The Singapore General Hospital (SGH) sees about 50 such patients a year, many of them young, working adults, said Dr Barrie Tan, head of its otolaryngology department.
Two thirds of people who suffer sudden hearing loss never recover their hearing, doctors estimate. Rehabilitation options here for permanent one-sided deafness include the bone-anchored hearing aid, an implant that uses bone conduction to transfer sound from the deafened ear to the hearing ear. Dr Tan said: “If a sound was transmitted from the person’s non-hearing side, he would first hear it as coming from his hearing side and would turn to that side before realising that it was coming from the deaf side. This could be due to the many sound-detecting inner ear hair cells being destroyed, so that the signals they normally relay to the brain are cut off, said Dr Low.

Instead, there are abnormal discharges of electrical stimuli to the brain, which could come from anywhere along the auditory system, resulting in tinnitus. The cochlear implant has been shown in studies to reduce tinnitus in such patients, most likely because it can correct the abnormal stimuli to the brain by altering the electrical signals. By the time Madam Tan saw Dr Low, she had had no hearing at all in her left ear for six weeks.
In a European study published in 2009, patients who had one-sided hearing loss reported difficulty localising sounds, following conversations on their deaf side and understanding what people were saying when there was background noise. Another study, published in 2010, found that patients with one-sided hearing loss who got cochlear implants could locate sounds better than those with other hearing aids. Dr Low said that the approval by the European authorities convinced him that “this surgery would benefit such patients and be worth the risk of surgery as well as the cost”. The dangers include about a 1 per cent risk each of infection and damage to the facial nerve, and a 2to 5 per cent risk of damage to the taste nerve, said DrTan. There is also a 4 to 5 per cent lifetime risk of implant failure, requiring surgery to remove it and, possibly, put in a new one, he added.
The cost of the surgery, including that of the implant and excluding government subsidies, is between $55,000 and $60,000 at Mount Elizabeth Novena Hospital.
Currently, a cochlear implant is subsidised by the Government when it is used in people with hearing loss in both ears, but not for those with one-sided hearing loss. This is due to a lack of clinical evidence of its effectiveness in people with one-sided hearing loss, said a Ministry of Health spokesman.
The cost may come down, with the SGH conducting its own study on 10 patients over two years.
Those above 18 years of age with sudden inner ear hearing loss of between six months and five years are eligible for the study. They will be counselled about rehabilitation options and cochlear implantation and be recruited in the study only if they opt for the implant, which is sponsored, Dr Tan said.
They will undergo tests before and after surgery to determine the benefits of the implant, he said. The findings will help doctors better understand the potential benefits of such treatment, he said.
If the benefits are proven, it can be made standard treatment for suitable patients and can then be subsidised, he added. Articles about people and hearing - Widex for professionalsThis website uses cookies for remembering your choices and for web statistics. The Tinnitus Clinic offers a number of different types of digital hearing aids that we can tailor to suit your hearing loss and life style requirements.
Elegant and inconspicuous digital hearing aids to allow you to to hear well without compromising your appearance.
The transmitter is placed behind or inside your poorer ear, where it picks up sound and transmits it wirelessly to the normal hearing ear. The transmitter is placed behind or inside your poorer ear, where it picks up sound and transmits it wirelessly to the better hearing ear. The Tinnitus Clinic is the leading provider of the latest evidence-based tinnitus treatments in the UK.

The exact reasons have always puzzled hearing scientists, and there is no known effective general treatment of tinnitus. A cochlear implant restores hearing to the deafened side by sending electrical signals to the brain. Others could have lost their hearing due to autoimmune diseases, tumours or radiotherapy to the head and neck.
Patients with these devices still have trouble locating sound sources as all sound is still heard by only the normal ear.
After the 20 patients were given cochlear implants, their speech understanding in a noisy environment improved.
The study aims to see if patients with sudden permanent one-sided hearing loss here also benefit from cochlear implantation, said Dr Tan, who is also the director of the centre for hearing and ear implants at SGH. If it did not work or if there were complications, it would have been a great disappointment. Our audiologists are experts in delivering the best outcome for you and the highest quality hearing care. The Tinnitus Clinic also supplies a range of wireless volume control devices, chargers and batteries for your Siemens hearing aid. Regardless of whether you have a hearing loss in your better ear or not, Phonak CROS offers a solution. At the same time, the receiving hearing aid also serves as an amplifier improving hearing in that ear.
We offer a highly personalised service and a commitment to audiological best practices to significantly reduce your tinnitus symptoms and hearing loss. This may be about to change due to discoveries made by researchers at the University of Western Australia.The scientists generated hearing damage and subsequent tinnitus in guinea pigs and recorded the levels of hearing loss and tinnitus. They use a variety of sophisticated hearing aid fitting methods in order to ensure that you get the most out of your residual hearing.
They found that increased activity in the nerve cells are caused by changes in the genes regulating nerve cell activity.
Let us help you and your clients in all steps on the way to better hearing.MAPPING TINNITUS IN THE BRAIN22-06 2015What is actually going on in the brain of tinnitus sufferers?
Our audiologists also fit hearing aids which provide noise enrichment programmes to help with the habituation of tinnitus. Gene therapyAccording to the scientists, the discovery gives rise to hope that calming the nerve cells may alleviate or even cure tinnitus. The underlying cause being changes in the genes, gene therapy may become a possible treatment.
What is however little known is his noise-induced hearing loss.TALKING ABOUT BATTERY LIFE WITH YOUR CLIENTS11-10 2014Why do hearing aids sometimes use up batteries so quickly and how can they be more efficient? It means that it may be possible to use drugs to block this activity and treat conditions such as tinnitus in the future,” stated Don Robertson, the leading researcher behind the discovery, to RNID, the British hearing organisation and sponsor of the research.

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