Single-sided sensorineural deafness (SSD)

In SSD, the Baha® System bypasses the deaf ear entirely and delivers sound directly to the hearing ear’s cochlea

Sensoneural hearing loss

Baha® is a good solution for patients with single-sided deafness and normal hearing in their good ear.1-3 In SSD, 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 360-degree sound awareness. Patients with normal hearing or mild hearing loss in the good ear can benefit from Baha.

Show allFeatured:

  • Acoustic neuroma

    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.

    Benefits of Baha

    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.

    Clinical results

    1. Andersen HT, Schrøder SA, Bonding P. Unilateral deafness after acoustic neuroma surgery: subjective hearing handicap and the effect of the bone-anchored hearing aid. Otol Neurotol 2006 Sep;27(6):809-14.
    2. Kunst SJ, Hol MK, Snik AF, Bosman AJ, Mylanus EA, Cremers CW. Bone anchored hearing aid in patients with acquired and congenital unilateral inner ear deafness (Baha CROS): clinical evaluation of 56 cases. Ann Otol Rhinol Laryngol 2010 Jul;119(7):447-54.

  • Congenital deafness

    For children 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.

    Benefit of Baha

    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.

    Clinical results

    1. Christensen L, Dornhoffer JL. Bone-anchored hearing aids for unilateral hearing loss in teenagers. Otol Neurotol 2008 Dec;29(8):1120-2.

     

  • Ménière’s disease

    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.

    Benefit of Baha

    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.

    Clinical results

    1. Kunst SJ, Hol MK, Snik AF, Bosman AJ, Mylanus EA, Cremers CW. Bone anchored hearing aid in patients with acquired and congenital unilateral inner ear deafness (Baha CROS): clinical evaluation of 56 cases. Ann Otol Rhinol Laryngol 2010 Jul;119(7):447-54.
    2. Lin LM, Bowditch S, Anderson MJ, May B, Cox KM, Niparko K. Amplification in the rehabilitation of unilateral deafness: speech in noise and directional hearing effects with bone-anchored hearing and contralateral routing of signal amplification. Otology and Neurology 2006;27(2):172-82.

     

  • Ototoxic drugs

    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.

    Benefit of Baha

    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.

    Clinical results

    1. Kunst SJ, Hol MK, Snik AF, Bosman AJ, Mylanus EA, Cremers CW. Bone anchored hearing aid in patients with acquired and congenital unilateral inner ear deafness (Baha CROS): clinical evaluation of 56 cases. Ann Otol Rhinol Laryngol 2010 Jul;119(7):447-54.
    2. Wazen JJ, Spitzer JB, Ghossaini SN, et al. Transcranial contralateral cochlear stimulation in unilateral deafness. Otolaryngol Head Neck Surg 2003;129(3):248-54.

     

  • Sudden 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.

    Benefit of Baha

    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.

    Clinical results

    1. Kunst SJ, Hol MK, Snik AF, Bosman AJ, Mylanus EA, Cremers CW. Bone anchored hearing aid in patients with acquired and congenital unilateral inner ear deafness (Baha CROS): clinical evaluation of 56 cases. Ann Otol Rhinol Laryngol 2010 Jul;119(7):447-54.
    2. Newman CW, Sandridge SA, Wodzisz LM. Longitudinal benefit from and satisfaction with the Baha system for patients with acquired unilateral sensorineural hearing loss. Otol Neurotol 2008 Dec;29(8):1123-31.

     

  • Trauma

    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.

    Benefit of Baha

    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.

    Clinical results

    1. Kunst SJ, Hol MK, Snik AF, Bosman AJ, Mylanus EA, Cremers CW. Bone anchored hearing aid in patients with acquired and congenital unilateral inner ear deafness (Baha CROS): clinical evaluation of 56 cases. Ann Otol Rhinol Laryngol 2010 Jul;119(7):447-54.
    2. Dumper J, Hodgetts B, Liu R, Brandner N. Indications for bone-anchored hearing AIDS: a functional outcomes study. J Otolaryngol Head Neck Surg 2009 Feb;38(1):96-105.

     

References

  1. Lin LM, Bowditch S, Anderson MJ, May B, Cox KM, Niparko K. Amplification in the rehabilitation of unilateral deafness: speech in noise and directional hearing effects with bone-anchored hearing and contralateral routing of signal amplification. Otology and Neurology 2006;27(2):172-82.
  2. Wazen JJ, Spitzer JB, Ghossaini SN, et al. Transcranial contralateral cochlear stimulation in unilateral deafness. Otolaryngol Head Neck Surg 2003;129(3):248-54.
  3. Hol MK, Bosman AJ, Snik AF, Mylanus EA, Cremers CW. Bone-anchored hearing aids in unilateral inner ear deafness: an evaluation of audiometric and patient outcome measurements. Otol Neurotol 2005;26(5):999-1006.