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An acoustic neuroma is a benign primary intracranial tumour located on the vestibulocochlear nerve (CN VIII) which may need surgical removal. The earliest symptoms of acoustic neuromas include sensorineural hearing loss, disturbed sense of balance, nausea and pressure in the ear. Tinnitus is also an extremely common symptom. The surgery to remove the tumour often results in deafness on the operated side.
In patients with single-sided deafness, Baha bypasses the deaf ear entirely and delivers sound directly to the hearing ear’s cochlea. This overcomes the head shadow effect, leading to improved speech understanding and increased sound awareness.
Aural atresia is characterised as the absence of an ear canal, sometimes this is also accompanied by the absence or deformation of the external ear, which is called microtia. Patients with microtia are often evaluated for external ear reconstructive surgery during childhood. However, it is crucial that hearing loss is swiftly evaluated after birth, supporting early intervention and leading to normal speech and language acquisition.
In most cases of atresia, Baha provides a solution which is both safe and cost effective when it comes to restoring hearing. From softband to implantation Baha provides an effective lifetime solution.
A cholesteatoma is a benign growth of skin in an abnormal location such as the middle ear. It usually occurs due to poor eustachian tube function or infection in the middle ear. It often develops as cysts or pouches that shed layers of old skin, which build up inside the middle ear. Over time, the cholesteatoma can increase in size and destroy the surrounding delicate bones of the middle ear. Hearing loss, dizziness, and facial muscle paralysis are rare, but can result from continued cholesteatoma growth.
Baha will provide a safe and efficient way of restoring hearing in these patients, with no further risk to their hearing. When the air-bone gap is larger than 30 dB, Baha will outperform conventional hearing aids.
Chronic otitis media occurs if a middle ear infection does not resolve, as drainage from the middle ear can become a chronic condition. This disease is much more common in persons with poor Eustachian tube function e.g. patients with cleft lip and palate or Down syndrome.
In chronic otitis media the first goal is to achieve an ear free of infection. However, some chronic ears infections are difficult or impossible to treat. For these patients Baha should be recommended, as the ear canal is left undisturbed, reducing the occurrence of further infections.
For patients with congenital single-sided deafness, hearing in noisy environments will be compromised. Not being able to hear from both sides may reduce the child's safety in challenging situations, such as in traffic. Research shows that single-sided hearing loss may result in the child facing difficulties at school.
External otitis is an inflammation of the outer ear and ear canal. For patients with a hearing loss, external otitis will make fitting of air conduction hearing aids problematic as the ear mould may further irritate the inflammation in the ear canal.
In external otitis, Baha is a preferable hearing solution as there is no interference with the ear canal that could aggravate the condition.
Ménière’s disease is associated with a change in fluid volume within the labyrinth. It can cause vertigo, tinnitus, hearing loss and aural fullness (feeling of pressure in the ear). In some cases, increasing sensorineural hearing loss can lead to complete deafness.
The most common type of otosclerosis is fixation of the stapes footplate to the oval window of the cochlea. This greatly impairs movement of the stapes and therefore transmission of sound into the inner ear. In all ossicular diseases, the first objective is to restore the function of the ossicular chain by middle ear surgery.
Some patients may reject the idea of middle ear surgery, as there is always a risk of further damage to their hearing. There are also patients whose previous surgery has failed to restore the function of the ossicular chain. Baha will provide a safe and efficient way of restoring hearing in these patients, with no further risk to their hearing. When the air-bone gap is larger than 30 dB, Baha will outperform conventional hearing aids.
Treatment with ototoxic drugs may cause hearing loss or deafness. Common types of ototoxic drugs are specific antibiotics and chemotherapy drugs. Baha can be a good treatment alternative in cases where this leads to single-sided deafness.
Sudden deafness is a severe sensorineural hearing loss that develops within a few hours, often without any medical explanation. The hearing loss may be temporary or permanent. If it results in single-sided deafness, Baha may be a good solution.
Skull trauma with or without skull fractures may cause hearing loss. If the loss is a conductive loss, or if the trauma results in single-sided deafness, Baha may be a good solution.
In conductive losses with an air-bone gap of more than 30 dB, Baha will provide better hearing compared to air conduction hearing aids. In patients with single-sided deafness, Baha will lift the head shadow effect, resulting in better hearing in noise and increased sound awareness.
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