Cochlear Implant Failures and Revision

Lassig, Amy Anne D.; Zwolan, Teresa A.; Telian, Steven A.

doi:10.1097/01.mao.0000178123.35988.96

Cited by 172 publications

(176 citation statements)

References 10 publications

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“…Although several reports on cochlear reimplantations have been published, only few data are available from large cohorts of patients, presenting a detailed workup on failure reasons as well as on postoperative audiologic performance. However, the existing reports have indicated that speech recognition usually remains stable after reimplantation, although it may even increase or in some cases significantly decrease [1][2][3][4][5] . Among the most commonly reported reasons for surgical revisions are failures concerning the implant housing or electrodes, software malfunction, medical reasons or poor performance despite adequate rehabilitation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fifty-Six Cochlear Implant Device Failures

Gosepath

Lippert²,

Keilmann³

et al. 2009

ORL

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Objective: Our aim was to present a failure analysis after cochlear implant revision surgery in a large series of children and adults and to assess the outcome and audiologic performance. Methods: Fifty-six cochlear implant failures that occurred in 422 devices implanted between 1990 and 2007 at the Department of Otolaryngology, Head and Neck Surgery at the University of Mainz, Germany, were retrospectively analyzed. The causes of failure were reviewed evaluating the individual history, telemetric and intraoperative findings and manufacturer’s investigation reports. Results: We performed 56 surgical revisions in a series of 422 consecutive implants (overall revision rate: 13.27%). The most frequent causes for revision were hard failures (58.9%), most commonly caused by traumatic impact (37.5%), especially in the pediatric population. Soft failures were less frequent (21.4%). Surgical reimplantations, although challenging in some cases, were performed without complications and with an electrode insertion depth comparable to that at the time of the initial implantation in all patients. The average audiologic performance improved by 2.4 dB in pure-tone perception levels after reimplantation. Conclusion: The cochlear implant failure rates vary between children and adults as well as between different implant manufactures. However, cochlear reimplantation is safe with excellent and predictable results in audiologic performance.

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Section: Introductionmentioning

confidence: 99%

Analysis of Fifty-Six Cochlear Implant Device Failures

Gosepath

Lippert²,

Keilmann³

et al. 2009

ORL

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“…The causes of cochlear implant failure are extrusion and malpositioning of the implant electrode, wound and flap problems, and trauma (13)(14)(15)(16). In addition, few authors have mentioned that allergy to silicon is one of the causes of cochlear implant extrusion (7-9).…”

Section: Discussionmentioning

confidence: 99%

Histopathological Effects of Parylene C (poly-chloro-p-xylylene) in the Inner Ear

Cevizci

Düzlü

Uyar

et al. 2016

Turk Arch Otorhinolaryngol

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Objective: To assess the histopathological effects of parylene C (PC) (poly-chloro-p-xylylene) in the inner ear. Methods:Nine adult Dunkin Hartley guinea pigs (500-600 g) were included in the study. PC pieces were inserted into the cochlea in the right ear of the animals (study group). The round windows were punctured in the left ears comprised the control group. After three months, the animals were sacrificed, and the dissected temporal bones were examined under a light microscope.Results: No significant difference was revealed between the study and control groups regarding histopathological findings such as perineural congestion, perineural inflammation, neural fibrosis, number of ganglion cells, edema, and degeneration of ganglion cells (p>0.05). Conclusion:PC did not cause any additional histopathologic damage in the cochlea. This finding may be promising regarding the use of PC in cochlear implant electrodes as an alternative to silicon materials in the future.

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“…Numerous studies [9][10][11][12][13][14][15] have examined major complications of CI, such as reimplantations/ revision surgery hard or soft device failure. Despite the paucity of research available about repair issues associated with the external components of CI, this is an issue that deserves highlight, especially in Brazil, since such devices are dispensed by SUS, with public budget.…”

Section: Discussionmentioning

confidence: 99%

Falhas dos componentes externos do implante coclear: influência da idade e do tempo de uso

Pereira

Melo

2014

Rev. CEFAC

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OBJETIVO: identificar quais são as falhas técnicas mais frequentes dos componentes externos do implante coclear e verificar a influência da idade do usuário e o tempo de uso do dispositivo nestas falhas.MÉTODOS: estudo retrospectivo, por meio da análise de 128 prontuários da Associação dos Deficientes Auditivos, Pais, Amigos e Usuários de Implante Coclear, que apresentaram alguma queixa no funcionamento do componente externo, no período de junho a agosto de 2011. Para análise dos dados foi realizada a análise descritiva dos componentes que apresentaram falha técnica, bem como das variáveis estudadas. Posteriormente, foi aplicada a estatística inferencial por meio do teste Kruskal-Wallis para verificar a influência da idade do paciente e tempo de uso do implante coclear com a falha apresentada, com nível de significância p< 0,05.RESULTADOS: os componentes que apresentaram mais falhas foram: antena externa (29,7%), seguida do compartimento de bateria (23,4%), processador de fala (14,10%), microfone (10,90%), cabos de transmissão (9,40%), controlador (6,30%), baterias (5,50%) e carregador de baterias (0,80%). Não foi verificada influência do tempo de uso do implante coclear e a idade cronológica do paciente em relação às falhas apresentadas no presente estudo.CONCLUSÃO: os achados obtidos a partir do presente estudo podem auxiliar os profissionais da área na orientação sobre a manutenção destes componentes, mas as tendências aqui apresentadas não podem ser generalizadas para todo território nacional, pois estas foram analisadas em um número limitado de casos.

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Cochlear Implant Failures and Revision

Cited by 172 publications

References 10 publications

Analysis of Fifty-Six Cochlear Implant Device Failures

Analysis of Fifty-Six Cochlear Implant Device Failures

Histopathological Effects of Parylene C (poly-chloro-p-xylylene) in the Inner Ear

Falhas dos componentes externos do implante coclear: influência da idade e do tempo de uso

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