Evidence map›Paper›PMID 23349453›Full record

ArticleJournal of applied physiology (Bethesda, Md. : 1985)2013

A simplified method for determining phenotypic traits in patients with obstructive sleep apnea.

Andrew Wellman, Bradley A Edwards, Scott A Sands, Robert L Owens, Shamim Nemati, James Butler, Chris L Passaglia, Andrew C Jackson, Atul Malhotra, David P White

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Journal of applied physiology (Bethesda, Md. : 1985), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07337239 (Assessment of the Effect of Hypoglossal Nerve Stimulation Therapy on Upper Airway Collapsibility During Drug-induced Sleep Endoscopy), which is not on this map. Cited by 121 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
121citing papers in PubMed, 3 pooled it
9.5field-weighted citation impact, top 1% 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.

NCT07337239 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Assessment of the Effect of Hypoglossal Nerve Stimulation Therapy on Upper Airway Collapsibility During Drug-induced Sleep Endoscopy

TypeinterventionalSponsorUniversity Hospital, AntwerpRan2026 to 2027Enrolled21ConditionsObstructive Sleep ApneaArmsAdditional measurements during clinical standard follow-up drug-induced sleep endoscopy (DISE)
3 · Its place in the literature

Who cites it

121 citing papers in PubMed, 3 syntheses or guidelines pooled it, 209 citations in OpenAlex.

  1. Pooled it
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  3. The importance of obstructive sleep apnoea and hypopnea pathophysiology for customized therapy.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 · 2017
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  5. A randomized controlled trial of oxygen therapy for patients who do not respond to upper airway surgery for obstructive sleep apnea.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2021
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61 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 1 country.

Andrew WellmanDivision of Sleep Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. awellman@rics.bwh.harvard.edu
Bradley A Edwards
Scott A Sands
Robert L Owens
Shamim Nemati
James Butler
Chris L Passaglia
Andrew C Jackson
Atul Malhotra
David P White
Brigham and Women's Hospital · USHarvard University · USBoston University · US

Funding

Wakefulness and Forebrain Activation by Orexin NeuronsP01HL095491 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI SCAMMELL, THOMAS E · 2010 to 2019
$25.1M
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
SLEEP, AIRWAY PATENCY, AND THE PHARYNGEAL MUSCULATURER01HL048531 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI WHITE, DAVID P. · 1992 to 2009
$3.8M
Single Motor Unit Genioglossus Recordings to Understand Sleep Apnea PathogenesisR01HL085188 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MALHOTRA, ATUL · 2008 to 2018
$3.5M
Mechanisms Underlying the Aging Predisposition to Obstructive Sleep ApneaR01HL090897 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI MALHOTRA, ATUL · 2009 to 2012
$1.8M
Assessment of Upper Airway Mechanics Using Newer EMG TechniquesK24HL093218 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MALHOTRA, ATUL · 2009 to 2013
$857k
NHLBI NIH HHS 5R01 HL-048531-16NHLBI NIH HHS K24 HL093218NHLBI NIH HHS K24-HL-093218NHLBI NIH HHS P01 HL-095491NHLBI NIH HHS P01 HL095491NHLBI NIH HHS R01 HL-085188NHLBI NIH HHS R01 HL085188NHLBI NIH HHS R01 HL-090897NHLBI NIH HHS R01 HL-102321NHLBI NIH HHS R01 HL102321
6 · The paper itself

Abstract

We previously published a method for measuring several physiological traits causing obstructive sleep apnea (OSA). The method, however, had a relatively low success rate (76%) and required mathematical modeling, potentially limiting its application. This paper presents a substantial revision of that technique. To make the measurements, continuous positive airway pressure (CPAP) was manipulated during sleep to quantify 1) eupneic ventilatory demand, 2) the level of ventilation at which arousals begin to occur, 3) ventilation off CPAP (nasal pressure = 0 cmH(2)O) when the pharyngeal muscles are activated during sleep, and 4) ventilation off CPAP when the pharyngeal muscles are relatively passive. These traits could be determined in all 13 participants (100% success rate). There was substantial intersubject variability in the reduction in ventilation that individuals could tolerate before having arousals (difference between ventilations #1 and #2 ranged from 0.7 to 2.9 liters/min) and in the amount of ventilatory compensation that individuals could generate (difference between ventilations #3 and #4 ranged from -0.5 to 5.5 liters/min). Importantly, the measurements accurately reflected clinical metrics; the difference between ventilations #2 and #3, a measure of the gap that must be overcome to achieve stable breathing during sleep, correlated with the apnea-hypopnea index (r = 0.9, P < 0.001). An additional procedure was added to the technique to measure loop gain (sensitivity of the ventilatory control system), which allowed arousal threshold and upper airway gain (response of the upper airway to increasing ventilatory drive) to be quantified as well. Of note, the traits were generally repeatable when measured on a second night in 5 individuals. This technique is a relatively simple way of defining mechanisms underlying OSA and could potentially be used in a clinical setting to individualize therapy.

Indexed as

Respiratory MechanicsAdultAgedDiagnosis, Computer-AssistedFemaleHumansLungMaleMiddle AgedPolysomnographyRespiratory Function TestsSleep Apnea, Obstructive

Identifiers

PMID23349453
PMCPMC3633440
OpenAlexW2056793793

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.