Evidence map›Paper›PMID 32925842›Full record

ArticleOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2020

Intraoperative Observational Real-time Electrocochleography as a Predictor of Hearing Loss After Cochlear Implantation: 3 and 12 Month Outcomes.

Stephen O'Leary, Robert Briggs, Jean-Marc Gerard, Claire Iseli, Benjamin P C Wei, Sylvia Tari, Alex Rousset, Christo Bester

Open access · hybridAbstract read
In one paragraph

Article in Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Electrocochleography in Cochlear Implant Users with Residual Acoustic Hearing: A Systematic Review.International journal of environmental research and public health · 2020
    Pooled it
  3. Digital live imaging of intraoperative electrocochleography during cochlear implantation: the first 50 patients.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Trial
  4. The effect of surgical complexity on hearing preservation during cochlear implantation with sheathed perimodiolar electrodes.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Review
  5. Review
  6. Amplitude and Phase Changes in Electrocochleographic Real-Time Recordings During Cochlear Implantation and Its Relation to Pre- and Postoperative Hearing.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2025
    Article
  7. Article
  8. Two different methods to digitally visualize continuous electrocochleography potentials during cochlear implantation: a first description of feasibility.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Article
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  12. Evaluation of hearing preservation in adults with a slim perimodiolar electrode.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Stephen O'LearyDepartment of Surgery-Otolaryngology, University of Melbourne.
Robert BriggsCochlear Implant Clinic, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Jean-Marc GerardDepartment of Surgery-Otolaryngology, University of Melbourne.
Claire IseliCochlear Implant Clinic, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Benjamin P C WeiCochlear Implant Clinic, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Sylvia TariCochlear Implant Clinic, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Alex RoussetCochlear Implant Clinic, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Christo BesterDepartment of Surgery-Otolaryngology, University of Melbourne.
Cochlear (Australia) · AUUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveA decrease in intracochlear electrocochleographic (ECochG) amplitude during cochlear implantation has been associated with poorer postoperative hearing preservation in several short-term studies. Here, we relate the stability of ECochG during surgery to hearing preservation at 3- and 12-months.

methodsPatients with hearing ≤80-dB HL at 500 Hz were implanted with a slim-straight electrode array. ECochG responses to short, high-intensity, 500-Hz pure tones of alternating polarity were recorded continuously from the apical-most electrode during implantation. No feedback was provided to the surgeon. ECochG amplitude was derived from the difference response, and implantations classified by the presence ("ECochG drop") or absence ("no drop") of a ≥30% reduction in ECochG amplitude during insertion. Residual hearing (relative and absolute) was reported against the ECochG class.

resultsECochG was recorded from 109 patients. Of these, interpretable ECochG signals were recorded from 95. Sixty-six of 95 patients had an ECochG drop during implantation. Patients with an ECochG drop had poorer preoperative hearing above 1000 Hz. Hearing preservation (in decibels, relative to preoperative levels and functionally) was significantly poorer at 250-, 500-, and 1000-Hz at 3 months in patients exhibiting an ECochG drop. Twelve-month outcomes were available from 85 patients, with significantly poorer functional hearing, and greater relative and absolute hearing loss from 250 to 1000 Hz, when an ECochG drop had been encountered.

conclusionPatients exhibiting ECochG drops during implantation had significantly poorer hearing preservation 12 months later. These observational outcomes support the future development of surgical interventions responsive to real-time intracochlear ECochG. Early intervention to an ECochG drop could potentially lead to prolonged improvements in hearing preservation.

Indexed as

Cochlear ImplantationCochlear ImplantsHearing LossAudiometry, Evoked ResponseCochleaHumans

Identifiers

PMID32925842
PMCPMC7497893
OpenAlexW3035775262

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.