Evidence map›Paper›PMID 33816599›Full record

ArticleERJ open research2021

Is laryngeal hypersensitivity the basis of unexplained or refractory chronic cough?

Krishna M Sundar, Amanda Carole Stark, Nan Hu, Julie Barkmeier-Kraemer

Open access · goldAbstract read
In one paragraph

Article in ERJ open research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.8field-weighted citation impact, top 4% 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

25 citing papers in PubMed, 42 citations in OpenAlex.

  1. Trial
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  5. When Refractory Is Not the End: Redefining Chronic Cough Through Tertiary Center Evaluation.Mayo Clinic proceedings. Innovations, quality & outcomes · 2026
    Article
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  7. Observational
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  17. Observational
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  19. Article
  20. Cough hypersensitivity and chronic cough.Nature reviews. Disease primers · 2022
    Review
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

4 authors at 2 institutions in 1 country.

Krishna M SundarDept of Internal Medicine, University of Utah, Salt Lake City, UT, USA.ORCID https://orcid.org/0000-0001-7220-5767
Amanda Carole StarkNational Center for Voice and Speech, University of Utah, Salt Lake City, UT, USA.
Nan HuDept of Biostatistics, Robert Stempel College of Public Health and Social Work and Division of Public Health, Florida International University, Miami, FL, USA.
Julie Barkmeier-KraemerDivision of Otolaryngology, University of Utah, Salt Lake City, UT, USA.ORCID https://orcid.org/0000-0002-5037-3070
University of Utah · USFlorida International University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Refractory chronic cough (RCC) and unexplained chronic cough (UCC) are common problems seen in primary care and subspecialty clinics. The role of cough hypersensitivity and laryngeal dysfunction in contributing to the persistence of cough in RCC/UCC is not well recognised. Data of patients with RCC and UCC evaluated in 2019 by an interdisciplinary cough clinic led by a pulmonologist and speech-language pathology team was reviewed. Patients completed validated questionnaires including the Leicester cough questionnaire (LCQ), voice handicap index (VHI) and dyspnoea index (DI) questionnaire at initial encounter. Presence of cough hypersensitivity was based upon a history of allotussia and hypertussia. Laryngeal dysfunction was diagnosed in those with a history of laryngeal paresthesias, throat clearing, voice abnormalities, upper airway dyspnoea and documentation of functional or anatomic laryngeal abnormalities on nasoendoscopy. Of the 60 UCC/RCC patients analysed, 75% of patients were female and 85% were over 40 years of age. Cough hypersensitivity was documented in all patients and multiple cough triggers occurred in 75% of patients. 95%, 50% and 25% of patients reported laryngeal paresthesias, voice abnormalities and upper airway dyspnoea, respectively. Significant associations between LCQ and VHI and DI scores occurred when adjusting for age, sex, ethnicity and body mass index. Laryngeal functional abnormalities were documented on 44 out of 60 patients on nasoendoscopy. Hypertussia, allotussia and laryngeal dysfunction are common in patients with RCC and UCC. Evaluation of UCC and RCC can delineate laryngeal hypersensitivity and allows appropriate treatment to be directed at this phenotype.

Identifiers

PMID33816599
PMCPMC8005678
OpenAlexW3125961524

What OpenQuestion holds

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LicenceCC BY-NC
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.