Evidence map›Paper›PMID 27448414›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2016

Upper Airway Collapsibility Assessed by Negative Expiratory Pressure while Awake is Associated with Upper Airway Anatomy.

Raquel P Hirata, Fabiola Schorr, Fabiane Kayamori, Henrique Takachi Moriya, Salvatore Romano, Giuseppe Insalaco, Eloisa M Gebrim, Luis Vicente Franco de Oliveira, Pedro R Genta, Geraldo Lorenzi-Filho

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Neuro-Ophthalmological Disorders Associated with Obstructive Sleep Apnoea.International journal of molecular sciences · 2025
    Review
  5. Article
  6. DISE with CPAP: a useful procedure to evaluate upper airway collapsibility.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
    Observational
  7. Article
  8. Phenotyping OSAH patients during wakefulness.Sleep & breathing = Schlaf & Atmung · 2022
    Article
  9. Article
  10. Review
  11. Article
  12. It's possible: why don't we do it?Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2021
    Article
  13. Article
  14. Observational
  15. Review
  16. Review
  17. Obstructive sleep apnea: current perspectives.Nature and science of sleep · 2018
    Review
  18. Review
  19. Personalised medicine in sleep respiratory disorders: focus on obstructive sleep apnoea diagnosis and treatment.European respiratory review : an official journal of the European Respiratory Society · 2017
    Review
  20. 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

10 authors at 4 institutions in 2 countries.

Raquel P HirataSleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
Fabiola SchorrSleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
Fabiane KayamoriSleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
Henrique Takachi MoriyaBiomedical Engineering Laboratory, Escola Politécnica, Universidade de São Paulo, Brazil.
Salvatore RomanoInstitute of Biomedicine and Molecular Immunology A. Monroy, Italian National Research Council, Palermo, Italy.
Giuseppe InsalacoInstitute of Biomedicine and Molecular Immunology A. Monroy, Italian National Research Council, Palermo, Italy.
Eloisa M GebrimRadiology Institute (InRad), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
Luis Vicente Franco de OliveiraRehabilitation Sciences Master and Doctoral Program, Universidade Nove de Julho, São Paulo, Brazil.
Pedro R GentaSleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
Geraldo Lorenzi-FilhoSleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRIstituto di Biomedicina e di Immunologia Molecolare Alberto Monroy · ITUniversidade de São Paulo · BRUniversidade Nove de Julho · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesThere is a growing interest to develop a simple method to characterize the mechanisms leading to upper airway collapse in order to guide treatment options in patients with obstructive sleep apnea (OSA). Critical closing pressure (Pcrit) during sleep is able to predict the anatomical component of OSA. However, Pcrit is a laborious method that is only used for research purposes. The application of negative expiratory pressure (NEP) is a simple method to assess upper airway collapsibility that can be easily performed during wakefulness. We hypothesized that NEP will be, similarly to Pcrit, associated with upper airway anatomy assessed by computed tomography (CT) scan.

methodsPatients under investigation for OSA underwent polysomnography, CT of the upper airway, NEP while awake, and Pcrit during sleep. NEP was performed with -5 cm H

resultsTwenty-eight male subjects were studied (age 45 ± 13 y, body mass index 29.4 ± 4.9 kg/m

conclusionsNEP is a simple and promising method that is associated with the anatomical component of upper airway collapsibility. NEP may be valuable to select patients for noncontinuous positive airway pressure alternative therapies for OSA.

Indexed as

WakefulnessAdolescentAdultAgedAirway ObstructionExhalationHumansMaleMiddle AgedPharynxPolysomnographyPressureSleep Apnea, ObstructiveTomography, X-Ray ComputedYoung Adultanatomycomputed tomographyobstructive sleep apneapathophysiologypharynx

Identifiers

PMID27448414
PMCPMC5033735
OpenAlexW2505163891

What OpenQuestion holds

Textmetadata
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.