Intraoperative recording of auditory brainstem responses for monitoring of floating mass transducer coupling efficacy during revision surgery: proof of concept

OBJECTIVE: The objective of the study was to measure auditory brainstem responses elicited by stimulation via a semi-implantable active middle ear implant with an electromagnetically driven floating mass transducer to quantify the coupling efficacy (=vibroplasty in situ thresholds-bone conduction th...

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Hauptverfasser: Fröhlich, Laura (VerfasserIn) , Rahne, Torsten (VerfasserIn) , Plontke, Stefan K.-R. (VerfasserIn) , Oberhoffner, Tobias (VerfasserIn) , Dziemba, Oliver Christian (VerfasserIn) , Gadyuchko, Maria (VerfasserIn) , Hoth, Sebastian (VerfasserIn) , Agha-Mir-Salim, Parwis (VerfasserIn) , Müller, Alexander (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: February 2020
In: Otology & neurotology
Year: 2020, Jahrgang: 41, Heft: 2, Pages: e168-e171
ISSN:1537-4505
DOI:10.1097/MAO.0000000000002511
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1097/MAO.0000000000002511
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Verfasserangaben:Laura Fröhlich, Torsten Rahne, Stefan K. Plontke, Tobias Oberhoffner, Oliver Dziemba, Maria Gadyuchko, Sebastian Hoth, Parwis Mir-Salim, Alexander Müller

MARC

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520 |a OBJECTIVE: The objective of the study was to measure auditory brainstem responses elicited by stimulation via a semi-implantable active middle ear implant with an electromagnetically driven floating mass transducer to quantify the coupling efficacy (=vibroplasty in situ thresholds-bone conduction thresholds) in a patient during a revision surgery. - PATIENTS: One patient, reimplanted with an active middle ear implant in a revision surgery. - INTERVENTION(S): Diagnostic. - MAIN OUTCOME MEASURE(S): Intraoperative auditory brainstem responses evoked by stimulation via an active middle ear implant in a calibrated set-up directly indicating the coupling efficacy magnitude (auditory brainstem response threshold=coupling efficacy), as well as pre- and postoperative bone conduction and vibroplasty in situ thresholds. - RESULTS: The intraoperative auditory brainstem response threshold was detected at 0dB nHL, i.e., the magnitude of coupling efficacy was determined intraoperatively to be 0dB. The actual postoperative coupling efficacy (=postoperative vibroplasty in situ-postoperative bone conduction thresholds) was -2.5dB. - CONCLUSIONS: The coupling efficacy determined intraoperatively was consistent with the postoperative coupling efficacy. The described method seems to be a promising tool to objectively quantify the magnitude of coupling efficacy in active middle ear implant surgeries. 
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