Evidence map›Paper›PMID 31318788›Full record

ArticleOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2019

Hearing Preservation With the Use of Flex20 and Flex24 Electrodes in Patients With Partial Deafness.

Piotr H Skarzynski, Henryk Skarzynski, Beata Dziendziel, Joanna J Rajchel, Elzbieta Gos, Artur Lorens

Abstract 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, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

6 citing papers in PubMed.

  1. Article
  2. Cochlear implantation in partial deafness: a case series with preoperatively substantial residual hearing at high frequencies.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 · 2025
    Article
  3. Article
  4. Article
  5. Magnetic Steering of Robotically Inserted Lateral-wall Cochlear-implant Electrode Arrays Reduces Forces on the Basilar Membrane In Vitro.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2021
    Article
  6. Article
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.

Piotr H SkarzynskiWorld Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw/Kajetany, Poland.
Henryk SkarzynskiWorld Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw/Kajetany, Poland.
Beata DziendzielWorld Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw/Kajetany, Poland.
Joanna J RajchelWorld Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw/Kajetany, Poland.
Elzbieta GosWorld Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw/Kajetany, Poland.
Artur LorensWorld Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw/Kajetany, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the impact of electrode length on hearing preservation (HP) in Partial Deafness Treatment-Electrical Complement (PDT-EC) subjects. STUDY

designRetrospective case review.

settingTertiary referral center. PATIENTS: Twenty-three PDT-EC patients (with preoperative air-conduction thresholds ≤30 dB up to 500 Hz) were divided into two groups: Flex20 electrode (Med-EL GmbH, Innsbruck, Austria) (12 patients) and Flex24 electrode (Med-EL GmbH, Innsbruck, Austria) (11 patients).

interventionsAll participants were subjected to minimally invasive cochlear implantation using the round window approach. MAIN OUTCOME MEASURE(S): Pure tone audiometry (125-8000 Hz) was performed preoperatively and at 1, 6, 12, and 24 months postoperatively. HP was established using the HEARRING group formula. Speech understanding was assessed preoperatively and at 12 and 24 months postoperatively.

resultsAnalysis of HP for every individual indicates that more than half the patients with Flex20 and Flex24 had complete HP at 6 months follow-up. None of the patients from either group had complete loss of hearing. At activation, average air-conduction thresholds for low frequencies (125-500 Hz) were slightly better for the short electrode (M = 29.03) than for the long (M = 39.10) but the difference was not statistically significant (p = 0.067). The effect of electrode (Flex20 versus Flex24) was not significant in terms of pure tone audiometry and speech recognition at long-term follow-up.

conclusionsIn the early postoperative period, complete HP was possible in a majority of patients from both groups, but slightly better HP outcomes were achieved by Flex20. In the long term, the length of the electrodes does not affect the degree of HP or speech understanding.

Indexed as

Cochlear ImplantsTreatment OutcomeAdultAgedCochlear ImplantationFemaleHearingHearing LossHumansMaleMiddle AgedRetrospective StudiesSpeech Perception

Identifiers

PMID31318788
PMCPMC6749963

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Registered trials

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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.