Evidence map›Paper›PMID 31116516›Full record

ArticlePhysiological reports2019

Airflow limitation in a collapsible model of the human pharynx: physical mechanisms studied with fluid-structure interaction simulations and experiments.

Trung B Le, Masoud G Moghaddam, B Tucker Woodson, Guilherme J M Garcia

Abstract read
In one paragraph

Article in Physiological reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Phenotypes of Velopharyngeal Tube Law in Obstructive Sleep Apnea.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2025
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Association between septal deviation and OSA diagnoses: a nationwide 9-year follow-up cohort study.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2021
    Article
  14. Article
  15. The collapsing anatomical structure is not always the primary site of flow limitation in obstructive sleep apnea.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2020
    Article
  16. Numerical and Experimental Analysis of Inhalation Airflow Dynamics in a Human Pharyngeal Airway.International journal of environmental research and public health · 2020
    Article
  17. 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

4 authors.

Trung B LeDepartment of Biomedical Engineering, Marquette University & The Medical College of Wisconsin, Milwaukee, Wisconsin.
Masoud G MoghaddamDepartment of Biomedical Engineering, Marquette University & The Medical College of Wisconsin, Milwaukee, Wisconsin.
B Tucker WoodsonDepartment of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin.
Guilherme J M GarciaDepartment of Biomedical Engineering, Marquette University & The Medical College of Wisconsin, Milwaukee, Wisconsin.

Funding

Clinical and Translational Science AwardUL1TR001436 · NCATS · MEDICAL COLLEGE OF WISCONSIN · PI FREED, JULIE K · 2015 to 2025
$47.5M
Clinical and Translational Science AwardKL2TR000056 · NCATS · MEDICAL COLLEGE OF WISCONSIN · PI SHAKER, REZA NONE · 2012 to 2015
$609k
NCATS NIH HHS KL2 TR000056NCATS NIH HHS UL1 TR001436
6 · The paper itself

Abstract

The classical Starling Resistor model has been the paradigm of airway collapse in obstructive sleep apnea (OSA) for the last 30 years. Its theoretical framework is grounded on the wave-speed flow limitation (WSFL) theory. Recent observations of negative effort dependence in OSA patients violate the predictions of the WSFL theory. Fluid-structure interaction (FSI) simulations are emerging as a technique to quantify how the biomechanical properties of the upper airway determine the shape of the pressure-flow curve. This study aimed to test two predictions of the WSFL theory, namely (1) the pressure profile upstream from the choke point becomes independent of downstream pressure during flow limitation and (2) the maximum flowrate in a collapsible tube is

Indexed as

Computer SimulationModels, AnatomicModels, BiologicalRespirationAirway ObstructionAirway ResistanceBiomechanical PhenomenaComplianceElastic ModulusFemaleHumansMagnetic Resonance ImagingMiddle AgedPharynxPressureRheologyAirflow limitationfluid-structure interaction simulations and experimentsobstructive sleep apneaStarling Resistor biomechanical model of airway collapsewave-speed flow limitation theory

Identifiers

PMID31116516
PMCPMC6530458

What OpenQuestion holds

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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.