Evidence map›Paper›PMID 31275978›Full record

ArticleBioMed research international2019

The Effect of Cochlear Size on Cochlear Implantation Outcomes.

Jafri Kuthubutheen, Amandeep Grewal, Sean Symons, Julian Nedzelski, David Shipp, Vincent Lin, Joseph Chen

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in BioMed research international, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

14 citing papers in PubMed, 28 citations in OpenAlex.

  1. Cochlear Duct Length: Rethinking Its Role in Auditory Outcomes.Turkish archives of otorhinolaryngology · 2025
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  3. Comparison of depth of electrode insertion between cochleostomy and round window approach: a cadaveric study.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
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

Jafri KuthubutheenDepartment of Otolaryngology Head and Neck Surgery, Fiona Stanley Hospital, Perth, Western Australia 6150, Australia.ORCID 0000-0003-2550-2472
Amandeep GrewalSunnybrook Health Sciences Centre, Toronto M4N3M5, Canada.
Sean SymonsSunnybrook Health Sciences Centre, Toronto M4N3M5, Canada.
Julian NedzelskiSunnybrook Health Sciences Centre, Toronto M4N3M5, Canada.
David ShippSunnybrook Health Sciences Centre, Toronto M4N3M5, Canada.
Vincent LinSunnybrook Health Sciences Centre, Toronto M4N3M5, Canada.
Joseph ChenSunnybrook Health Sciences Centre, Toronto M4N3M5, Canada.
Sunnybrook Health Science Centre · CAFiona Stanley Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo determine if cochlear duct length and cochlear basal diameter, measured using routinely available radiology software, affect hearing outcomes after cochlear implantation with two different length electrodes.

methods55 patients who received a Med-El Flex electrode were retrospectively reviewed. 34 patients received the Flex 31 electrode (31mm) and 21 patients received the Flex 28 electrode (28mm). Preoperative high-resolution CT scans of the temporal bone were reformatted in the axial and coronal plane. The basal diameter of the cochlear (A-value) and the outer-wall lengths of the cochlear duct were measured using readily available imaging software. Postoperative plane X-rays were used to determine the degree of electrode insertion and the number of electrodes within the cochlea and speech discrimination scores at 6 months were evaluated.

resultsThe cochlear metrics obtained were comparable with those previously published in the literature. There was no significant difference in the degree of insertion or speech outcomes between the two electrode lengths. However, when the group who had received the shorter electrode were analysed, there was an association seen between both cochlear duct length and cochlear diameter and speech outcomes.

conclusionsCochlear size may be a factor in determining speech outcomes that cannot be explained solely by insertion depth or degrees of insertion. Further studies are required to determine if cochlear duct length is an independent predictor of speech outcomes.

Indexed as

Cochlear ImplantationCochleaCochlear DuctFemaleHearingHumansMaleMiddle AgedOrgan SizeSpeechTreatment Outcome

Identifiers

PMID31275978
PMCPMC6582906
OpenAlexW2948347245

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.