Bilateral Bone-Anchored Hearing Aid Application in Children

Dun, Catharina A. J.; Wolf, Maarten J. F. de; Mylanus, Emmanuel A. M.; Snik, A.F.M.; Hol, Myrthe K. S.; Cremers, C.W.R.J.

doi:10.1097/mao.0b013e3181dbb37e

Cited by 34 publications

(36 citation statements)

References 17 publications

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“…12, 24, 25 In 2001, Bosman et al evaluated sound localization and speech reception thresholds in noise and in quiet in 25 patients with bilateral BAHD. 26 They found that patients with bilateral BAHDs had significantly improved sound localization and improved speech recognition in quiet and in noise.…”

Section: Discussionmentioning

confidence: 99%

Intracochlear Measurements of Interaural Time and Level Differences Conveyed by Bilateral Bone Conduction Systems

Farrell

Hartl²,

Benichoux³

et al. 2017

Otology &Amp; Neurotology

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Hypothesis Intracochlear pressures (PIC) and stapes velocity (Vstap) elicited by bilaterally-placed bone anchored hearing devices (BAHD) will be systematically modulated by imposed interaural time (ITD) and level differences (ILD), demonstrating the potential for users of bilateral BAHD to access these binaural cues. Background BAHD are traditionally implanted unilaterally under the assumption that transcranial cross-talk limits interaural differences. Recent studies have demonstrated improvements in binaural and spatial performance with bilateral BAHD; however, objective measures of binaural cues from bilateral BAHDs are lacking. Methods Bone-conduction transducers were coupled to both mastoids of cadaveric specimens via implanted titanium abutments. PIC and Vstap were measured using intracochlear pressure probes and laser Doppler vibrometry, respectively, during stimulation with pure tone stimuli of varied frequency (250–4000 Hz) in ipsilateral, contralateral and bilateral ITD (−1 to 1 ms) and ILD (−20 to 20 dB) conditions. Results Bilateral stimulation produced constructive and destructive interference patterns that varied dramatically with ITD and stimulus frequency. Variation of ITD led to large variation of PIC and Vstap, with opposing effects in ipsilateral and contralateral ears expected to lead to “ITD to ILD conversion”. Variation of ILD produced more straightforward (monotonic) variations of PIC and Vstap, with ipsilateral-favoring ILD producing higher PIC and Vstap than contralateral-favoring. Conclusion Variation of ITDs and ILDs conveyed by BAHDs systematically modulated cochlear inputs. While transcranial cross-talk leads to complex interactions that depend on cue type and stimulus frequency, binaural disparities potentiate binaural benefit, providing a basis for improved sound localization and speech-in-noise perception.

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Section: Discussionmentioning

confidence: 99%

Intracochlear Measurements of Interaural Time and Level Differences Conveyed by Bilateral Bone Conduction Systems

Farrell

Hartl²,

Benichoux³

et al. 2017

Otology &Amp; Neurotology

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“…The BAHD has also been shown to be beneficial in children with bilateral and unilateral conductive or mixed hearing loss [5]. Subjective benefit was reported to be greater in children with bilateral BAHDs in terms of better sound localisation and speech recognition in noise [5][6][7].…”

Section: Indicationsmentioning

confidence: 97%

“…Christensen et al reviewed 23 children (age range [6][7][8][9][10][11][12][13][14][15][16][17][18][19] that had a BAHD for single sided deafness [8]. They assessed outcome using two questionnaires -Hearing in Noise Test (HINT) and Children's Home Inventory for Listening Difficulties (CHILD).…”

Section: Indicationsmentioning

confidence: 99%

Bone anchored hearing aids in children: An update

Doshi

Sheehan

McDermott

2012

International Journal of Pediatric Otorhinolaryngology

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“…Due to the small attenuation of vibrations in the skull, it has been argued that one BAHA can also stimulate the cochlea on the opposite side [10,20]. There have been studies, however, which report improved audiological outcomes and quality of life in children fitted with bilateral BAHAs [16,21,22], indicating that there may be a role for this intervention in some children. Fifty percent of our respondents have performed bilateral BAHAs in children.…”

Section: Discussionmentioning

confidence: 99%

The current practice trends in pediatric bone-anchored hearing aids in Canada: A national clinical and surgical practice survey

Liu

Chadha

Bance

et al. 2013

Journal of Otolaryngology - Head & Neck Surgery

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BackgroundSince the introduction of bone-anchored hearing aids (BAHAs) in the 1980s, the practices of surgeons who implant these hearing aids have become varied; different indications and surgical techniques are utilized depending on the surgeon and institution. The objective of the current study is to describe the clinical and surgical practices of otolaryngologists in Canada who perform pediatric BAHA operations.MethodsA detailed practice questionnaire was devised and sent to all members of the Canadian Society of Otolaryngology-Head and Neck Surgery. Those who performed pediatric BAHA surgeries were asked to participate.ResultsTwelve responses were received (response rate of 80%). All of the respondents identified congenital aural atresia to be an indication for pediatric BAHAs. Other indications were chronic otitis externa or media with hearing loss (92%), allergic reactions to conventional hearing aids (75%), congenital fixation or anomaly of ossicular chain (67%), and unilateral deafness (25%). Minor complications, such as skin reactions, were reported in 25% of cases, while major complications were very rare. There was great variability with regards to surgical techinque and post-operative management. The extent of financial support for the BAHA hardware and device also varied between provinces, and even within the same province.ConclusionThere is a lack of general consensus regarding pediatric BAHA surgeries in Canada. With such a small community of otolaryngologists performing this procedure, we are hopeful that this survey can serve as an impetus for a national collaboration to establish a set of general management principles and inspire multi-site research ventures.

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Bilateral Bone-Anchored Hearing Aid Application in Children

Cited by 34 publications

References 17 publications

Intracochlear Measurements of Interaural Time and Level Differences Conveyed by Bilateral Bone Conduction Systems

Intracochlear Measurements of Interaural Time and Level Differences Conveyed by Bilateral Bone Conduction Systems

Bone anchored hearing aids in children: An update

The current practice trends in pediatric bone-anchored hearing aids in Canada: A national clinical and surgical practice survey

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