Evidence map›Paper›PMID 27608418›Full record

ArticleOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2016

Post Hybrid Cochlear Implant Hearing Loss and Endolymphatic Hydrops.

Akira Ishiyama, Joni Doherty, Gail Ishiyama, Alicia M Quesnel, Ivan Lopez, Fred H Linthicum

Open access · greenAbstract 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, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. Imaging meets function: radiological and vestibular predictors of long-term cochlear implant outcomes in patients with Ménière disease.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
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  17. Histopathologic Analysis of Temporal Bones With Otosclerosis Following Cochlear Implantation.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2021
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  18. Cisplatin ototoxicity histopathology.Laryngoscope investigative otolaryngology · 2021
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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

6 authors at 2 institutions in 1 country.

Akira Ishiyama*Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, California†Shohet Ear Associates Medical Group, Seal Beach and Newport Beach, California‡Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, California§Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts.
Joni Doherty
Gail Ishiyama
Alicia M Quesnel
Ivan Lopez
Fred H Linthicum
Harvard University · USMassachusetts Eye and Ear Infirmary · US

Funding

The Otopathology of Hearing Loss: Genotype-Phenotype Correlation in Human TBU24DC011962 · NIDCD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ISHIYAMA, AKIRA, LINTHICUM, FRED H · 2011 to 2015
$2.2M
NIDCD NIH HHS U24 DC011962
6 · The paper itself

Abstract

objectiveTo evaluate for potential causes of delayed loss of residual hearing that variably occurs with hybrid cochlear implants. STUDY

designHistopathological evaluation of 29 human temporal bone (HTB) with cochlear implant (CI).

settingThe Neurotology and House HTB Laboratory of UCLA (House-UCLA). SUBJECTS AND

methodsHTB from CI patients from the House-UCLA HTB Laboratory (n = 28) and one courtesy of Massachusetts Eye and Ear Infirmary (MEEI). Histopathological analysis to identify the location of cochleostomy, fibrosis, and bone formation in the scala vestibuli and tympani, and endolymphatic hydrops. Spiral ganglion neuron counts were obtained. Statistical analysis compared presence of cochleostomy and location with the histopathological findings.

resultsSeventeen of 29 bones with fibrosis in the scala vestibule (SV) and tympani had evidence of a cochleostomy involving the SV containing the ductus reunions, all of which had hydrops. Ten of 11 bones had no SV fibrosis, and a cochleostomy limited to the scala tympani, of which all had no hydrops. One HTB had moderate SV fibrosis not involving the ductus reuniens, and was without hydrops. One HTB had a SV cochleostomy but the electrode ruptured Reissner's membrane, and was without hydrops. Cochleostomy was significantly associated with SV fibrosis and hydrops (p < 0.01), those without hydrops had no SV atrophy (p < 0.01). Round window insertion was associated with no fibrosis and no hydrops.

conclusionWe hypothesize that cochleostomies involving scala vestibuli incite fibrosis, compromising the ductus reuniens, causing hydrops which may cause the delayed loss of residual low frequency hearing in CI.

Indexed as

Cochlear ImplantationCochlear ImplantsEndolymphatic HydropsFemaleFibrosisHearing Loss, SensorineuralHearing TestsHumansMalePostoperative ComplicationsScala VestibuliTemporal Bone

Identifiers

PMID27608418
PMCPMC5102757
OpenAlexW2510290602

What OpenQuestion holds

Textmetadata
LicenceTDM
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.