gms | German Medical Science

27. Jahrestagung der Deutschen Gesellschaft für Audiologie
und Arbeitstagung der Arbeitsgemeinschaft Deutschsprachiger Audiologen, Neurootologen und Otologen

Deutsche Gesellschaft für Audiologie e. V. und ADANO

19. - 21.03.2025, Göttingen

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Clinical evidence for the impact of implant position on maximum output in bonebridge patients

Meeting Abstract

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  • presenting/speaker Mohammad Ghoncheh - Medizinische Hochschule Hannover, Hannover, Deutschland
  • Daniel Schurzig - Medizinische Hochschule Hannover, HNO, Hannover, Deutschland; Cluster of Excellence Hearing4All, HNO, Hannover, Deutschland; MED-EL Research Center, Hannover, Deutschland
  • Rebecca Iseke - Medizinische Hochschule Hannover, HNO, Hannover, Deutschland
  • Thomas Lenarz - Medizinische Hochschule Hannover, HNO, Hannover, Deutschland; Cluster of Excellence Hearing4All, HNO, Hannover, Deutschland
  • Nils Prenzler - Medizinische Hochschule Hannover, HNO, Hannover, Deutschland; Cluster of Excellence Hearing4All, HNO, Hannover, Deutschland
  • Hannes Maier - Medizinische Hochschule Hannover, HNO, Hannover, Deutschland; Cluster of Excellence Hearing4All, HNO, Hannover, Deutschland

Deutsche Gesellschaft für Audiologie e. V. und ADANO. 27. Jahrestagung der Deutschen Gesellschaft für Audiologie und Arbeitstagung der Arbeitsgemeinschaft Deutschsprachiger Audiologen, Neurootologen und Otologen. Göttingen, 19.-21.03.2025. Düsseldorf: German Medical Science GMS Publishing House; 2025. Doc039

doi: 10.3205/25dga039, urn:nbn:de:0183-25dga0394

Veröffentlicht: 18. März 2025

© 2025 Ghoncheh et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.

Gliederung

Text

Introduction: The use of bone conduction devices (BCD) as a therapeutic approach for conductive and mixed hearing losses is well-established. Semi-implantable BCDs compared to bone anchored hearing systems offer greater flexibility in placement. Experimental studies using laser Doppler vibrometry (LDV) on human cadaver models have demonstrated that closer distance of the implanted transducer to the cochlea provides higher cochlear promontory vibration output, serving as a proxy for improved auditory perception. This study is the first attempt to investigate the output-distance-dependency in Bonebridge-implanted patients.

Methods: Postoperative CT scans from 28 Bonebridge-implanted patients were analyzed to determine the position of the bone conduction (BC) transducer relative to the ipsilateral cochlea. A novel approach was employed to calculate MO based solely on audiological data for each patient [1]. Subsequently, a correlation analysis was conducted between transducer-to-cochlea distance and MO across measured frequencies between 0.5 and 6 kHz.

Results: The distances between the BC transducer center and the ipsilateral cochlea covered a range of approximately 20 mm from 30 to 50 mm. The average MOs at frequencies from 0.5 to 6 kHz were found to be between 53 to 71 dB HL. A correlation analysis (Pearson) using a linear regression (R²=0.41; p<0.05) revealed that shorter distances between the transducer and the cochlea were associated with higher MOs at low frequencies (0.5–2 kHz).

Conclusion: The influence of implant placement onto audiological patient benefit could be demonstrated based on clinical data of actual BC implant patients, favoring maximal proximity to the ipsilateral cochlea. These findings emphasize the importance of implant placement to optimize the hearing outcome.

Gliederung

References

1.
Ghoncheh M, Busch S, Lenarz T, Maier H. A Novel Method to Determine the Maximum Output of Individual Patients for an Active Transcutaneous Bone Conduction Implant Using Clinical Routine Data. Ear Hear. 2024 Jan-Feb 01;45(1):219-226. DOI: 10.1097/AUD.0000000000001415 Externer Link