Evidence map›Paper›PMID 34938884›Full record

ArticleLaryngoscope investigative otolaryngology2021

Effect of transducer placements on thresholds in ears with an abnormal ear canal and severe conductive hearing loss.

Tadashi Nishimura, Hiroshi Hosoi, Osamu Saito, Ryota Shimokura, Chihiro Morimoto, Tadao Okayasu, Tadashi Kitahara

Open access · goldAbstract read
In one paragraph

Article in Laryngoscope investigative otolaryngology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

4 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
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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

7 authors at 3 institutions in 1 country.

Tadashi NishimuraDepartment of Otolaryngology-Head and Neck Surgery Nara Medical University Nara Japan.ORCID https://orcid.org/0000-0002-0000-1041
Hiroshi HosoiMBT (Medicine-Based Town) Institute Nara Medical University Nara Japan.
Osamu SaitoDepartment of Otolaryngology-Head and Neck Surgery Nara Medical University Nara Japan.
Ryota ShimokuraGraduate School of Engineering Science Osaka University Osaka Japan.
Chihiro MorimotoDepartment of Otolaryngology-Head and Neck Surgery Nara Medical University Nara Japan.
Tadao OkayasuDepartment of Otolaryngology-Head and Neck Surgery Nara Medical University Nara Japan.ORCID https://orcid.org/0000-0002-0811-1405
Tadashi KitaharaDepartment of Otolaryngology-Head and Neck Surgery Nara Medical University Nara Japan.ORCID https://orcid.org/0000-0002-5260-6202
Nara Medical University Hospital · JPNara Medical University · JPOsaka Health Science University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesProviding hearing compensation to patients with aural atresia is considerably challenging. Hearing aid transducers vibrating the aural cartilage (cartilage conduction; CC) have been devised, and hearing aids utilizing them (CC hearing aids) have quickly become a beneficial option for aural atresia in clinical applications. However, it remains unclear which placement (on the aural cartilage or mastoid) is beneficial to signal transmission.

methodsThis study included 35 patients (53 ears with an abnormal ear canal and severe conductive hearing loss) who were using CC hearing aids. Thresholds were compared between the transducers on the aural cartilage and on the mastoid.

resultsIn ears with bony aural atresia, thresholds were significantly improved when the transducer was placed on the aural cartilage compared to when it was placed on the mastoid for frequencies ≤ 500 Hz (

conclusionOur findings demonstrated that placing the transducer at the aural cartilage improved the mid-to-low frequency thresholds compared to mastoid transduction in aural atretic ears. In contrast, no clear improvement to the signal transmission due to the transducer's placement on the aural cartilage was recognized in non-atretic ears. LEVEL OF EVIDENCE: 2.

Indexed as

bone‐anchored hearing aidbone conductioncartilage conductionconductive hearing lossfibrotic tissue pathwayhearing aid

Identifiers

PMID34938884
PMCPMC8665469
OpenAlexW3211719751

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.