Evidence map›Paper›PMID 31503323›Full record

ArticleThe Journal of physiology2019

Structure and severity of pharyngeal obstruction determine oral appliance efficacy in sleep apnoea.

Melania Marques, Pedro R Genta, Ali Azarbarzin, Luigi Taranto-Montemurro, Ludovico Messineo, Lauren B Hess, Gail Demko, David P White, Scott A Sands, Andrew Wellman

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 53 citations in OpenAlex.

  1. Oral appliances for obstructive sleep apnoea in adults.The Cochrane database of systematic reviews · 2026
    Pooled it
  2. Trial
  3. Observational
  4. Article
  5. Article
  6. Article
  7. 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
  8. Article
  9. Article
  10. Sleep Apnea Physiological Burdens and Cardiovascular Morbidity and Mortality.American journal of respiratory and critical care medicine · 2023
    Article
  11. Association of cortical arousals with sleep-disordered breathing events.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2023
    Article
  12. Article
  13. Review
  14. Article
  15. Non-CPAP therapy for obstructive sleep apnoea.Breathe (Sheffield, England) · 2022
    Review
  16. Article
  17. Article
  18. In-home mandibular repositioning during sleep using MATRx plus predicts outcome and efficacious positioning for oral appliance treatment of obstructive sleep apnea.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 5 countries.

Melania MarquesDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.ORCID 0000-0003-1477-5459
Pedro R GentaLaboratorio do sono, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Ali AzarbarzinDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Luigi Taranto-MontemurroDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Ludovico MessineoDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.ORCID 0000-0002-4142-9124
Lauren B HessDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Gail DemkoSleep Apnea Dentists of New England, Weston, MA, USA.ORCID 0000-0002-3530-849X
David P WhiteDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Scott A SandsDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Andrew WellmanDivision of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Brigham and Women's Hospital · USHospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRRoyal College of Anaesthetists · GB

Funding

Harvard Clinical and Translational Science CenterUL1TR001102 · NCATS · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2013 to 2017
$106.2M
Validation of a Phenotype Model to Predict Response to Alternative OSA TreatmentsR01HL102321 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI WELLMAN, DAVID ANDREW · 2011 to 2025
$7.3M
Determination of the site of pharyngeal collapse in Obstructive Sleep Apnea patients from snoring soundsR01HL128658 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI WELLMAN, DAVID ANDREW · 2016 to 2025
$4.3M
NCATS NIH HHS UL1 TR001102NHLBI NIH HHS R01 HL102321NHLBI NIH HHS R01 HL128658
6 · The paper itself

Abstract

key points•Some patients with obstructive sleep apnoea (OSA) respond well to oral appliance therapy, whereas others do not for reasons that are unclear. •In the present study, we used gold-standard measurements to demonstrate that patients with a posteriorly-located tongue (natural sleep endoscopy) exhibit a preferential improvement in collapsibility (lowered critical closing pressure) with oral appliances. •We also show that patients with both posteriorly-located tongue and less severe collapsibility (predicted responder phenotype) exhibit greater improvements in severity of obstructive sleep apnoea (i.e. reduction in event frequency by 83%, in contrast to 48% in predicted non-responders). •The present study suggests that the structure and severity of pharyngeal obstruction determine the phenotype of sleep apnoea patients who benefit maximally from oral appliance efficacy. ABSTRACT: A major limitation to the administration of oral appliance therapy for obstructive sleep apnoea (OSA) is that therapeutic responses remain unpredictable. In the present study, we tested the hypotheses that oral appliance therapy (i) reduces pharyngeal collapsibility preferentially in patients with posteriorly-located tongue and (ii) is most efficacious (reduction in apnoea-hypopnea index; AHI) in patients with a posteriorly-located tongue and less-severe baseline pharyngeal collapsibility. Twenty-five OSA patients underwent upper airway endoscopy during natural sleep to assess tongue position (type I: vallecula entirely visible; type II: vallecula obscured; type III: vallecula and glottis obscured), as well as obstruction as a result of other pharyngeal structures (e.g. epiglottis). Additional sleep studies with and without oral appliance were performed to measure collapsibility (critical closing pressure; Pcrit) and assess treatment efficacy. Overall, oral appliance therapy reduced Pcrit by 3.9 ± 2.4 cmH

Indexed as

AdultAgedContinuous Positive Airway PressureFemaleHumansMaleMiddle AgedPharynxPolysomnographyPressureSleepSleep Apnea, ObstructiveTongueYoung Adult

Identifiers

PMID31503323
PMCPMC8359733
OpenAlexW2972894951

What OpenQuestion holds

Textmetadata
LicenceTDM
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.