An evidence-based guide for intraoperative cochlear implant backup use

Khater, Ahmed; Moustafa, Mohamed Fawzy; Said, A Ould; Fahmy, Hadeer Safwat

doi:10.1016/j.ijporl.2015.06.037

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…This metric provides important clinical information about the device and individual electrode function, in both intra and post-operative patient's appointments. In today's CI standard of care, it is mainly used to investigate the electrode's overall function (Paasche et al, 2006), detect problems such as short-circuit or open circuit (Goehring et al, 2013), guide audio-processors fitting (Khater et al, 2015), and determine power consumption (Newbold et al, 2015). For example, intra-operatively this measure checks the integrity of the device after surgical manipulation.…”

Section: Introductionmentioning

confidence: 99%

Measuring the Electrical Status of the Bionic Ear. Re-thinking the Impedance in Cochlear Implants

Lella

Parreño

Fernandez

et al. 2020

Front. Bioeng. Biotechnol.

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As in any biophysical electrode-tissue environment, impedance measurement shows a complex relationship which reflects the electrical characteristics of the medium. In cochlear implants (CIs), which is mostly a stimulation-oriented device, the actual clinical approach only considers one arbitrary time-measure of the impedance. However, to determine the main electrical properties of the cochlear medium, the overall impedance and its subcomponents (i.e., access resistance and polarization impedance) should be described. We here characterized, validated and discussed a novel method to calculate impedance subcomponents based on CI measurement capabilities. With an electronic circuit of the cochlear electrode-tissue interface and its computational simulation, the access resistance and polarization impedance were modeled. Values of each electrical component were estimated through a custom-made pulse delivery routine and the acquisition of multiple data points. Using CI hardware, results fell within the electronic components nominal errors (± 10%). Considering the method's accuracy and reliability, it is readily available to be applied in research-clinical use. In the man-machine nature of the CI, this represents the basis to optimize the communication between a CI electrode and the spiral ganglion cells.

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Section: Introductionmentioning

confidence: 99%

Measuring the Electrical Status of the Bionic Ear. Re-thinking the Impedance in Cochlear Implants

Lella

Parreño

Fernandez

et al. 2020

Front. Bioeng. Biotechnol.

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Electric compound action potentials (ECAPs) and impedances in an open and closed operative site during cochlear implantation

Christov

Gluth

Lahti

et al. 2018

Cochlear Implants International

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The Influence of Intraoperative Testing on Surgical Decision-making During Cochlear Implantation

Page

Murphy²,

Kennett³

et al. 2017

Otology &Amp; Neurotology

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Our data suggest that with respect to CI in children and adults in straightforward cases (e.g., normal anatomy, nondifficult insertion, etc.), routine intraoperative evoked compound action potentials, impedances, and imaging rarely influence surgical decision-making in our clinic and may have limited usefulness in these patients. The implications of this are discussed and a review of the literature is presented.

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An evidence-based guide for intraoperative cochlear implant backup use

Cited by 5 publications

References 22 publications

Measuring the Electrical Status of the Bionic Ear. Re-thinking the Impedance in Cochlear Implants

Measuring the Electrical Status of the Bionic Ear. Re-thinking the Impedance in Cochlear Implants

Electric compound action potentials (ECAPs) and impedances in an open and closed operative site during cochlear implantation

The Influence of Intraoperative Testing on Surgical Decision-making During Cochlear Implantation

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