Evidence map›Paper›PMID 21344051›Full record

Trial reportJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2011

Predictors of response to a nasal expiratory resistor device and its potential mechanisms of action for treatment of obstructive sleep apnea.

Amit V Patel, Dennis Hwang, Maria J Masdeu, Guo-Ming Chen, David M Rapoport, Indu Ayappa

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–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

22 citing papers in PubMed.

  1. Expiratory Positive Airway Pressure for Sleep Apnea after Stroke: A Randomized, Crossover Trial.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2016
    Trial
  2. Apnea-induced rapid eye movement sleep disruption impairs human spatial navigational memory.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Trial
  3. Trial
  4. Mechanisms of nasal high flow on ventilation during wakefulness and sleep.Journal of applied physiology (Bethesda, Md. : 1985) · 2013
    Trial
  5. Long-term use of a nasal expiratory positive airway pressure (EPAP) device as a treatment for obstructive sleep apnea (OSA).Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2011
    Trial
  6. Article
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  9. Review
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  11. Review
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  14. Frequency and accuracy of "RERA" and "RDI" terms in the Journal of Clinical Sleep Medicine from 2006 through 2012.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2014
    Article
  15. Review
  16. Complex sleep apnea.Current treatment options in neurology · 2013
    Article
  17. Review
  18. New and unconventional treatments for obstructive sleep apnea.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2012
    Review
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Amit V PatelDivision of Pulmonary, Critical Care and Sleep Medicine, NYU School of Medicine, New York, NY 10016 , USA.
Dennis Hwang
Maria J Masdeu
Guo-Ming Chen
David M Rapoport
Indu Ayappa

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectiveA one-way nasal resistor has recently been shown to reduce sleep disordered breathing (SDB) in a subset of patients with Obstructive Sleep Apnea Hypopnea Syndrome (OSAHS). The purpose of this study was to examine characteristics predictive of therapeutic response to the device and provide pilot data as to its potential mechanisms of action. PATIENTS, INTERVENTIONS, AND MEASUREMENTS: 20 subjects (15M/5F, age 54 ± 12 years, BMI 33.5 ± 5.6 kg/m²) with OSAHS underwent 3 nocturnal polysomnograms (NPSG) including diagnostic, therapeutic (with a Provent® nasal valve device), and CPAP. Additional measurements included intranasal pressures and PCO₂, closing pressures (Pcrit), and awake lung volumes in different body positions.

resultsIn 19/20 patients who slept with the device, RDI was significantly reduced with the nasal valve device compared to the diagnostic NPSG (27 ± 29/h vs 49 ± 28/h), with 50% of patients having an acceptable therapeutic response. Among demographic, lung volume, or diagnostic NPSG measures or markers of collapsibility, no significant predictors of therapeutic response were found. There was a suggestion that patients with position-dependent SDB (supine RDI > lateral RDI) were more likely to have an acceptable therapeutic response to the device. Successful elimination of SDB was associated with generation and maintenance of an elevated end expiratory pressure. No single definitive mechanism of action was elucidated.

conclusionsThe present study shows that the nasal valve device can alter SDB across the full spectrum of SDB severity. There was a suggestion that subjects with positional or milder SDB in the lateral position were those most likely to respond.

Indexed as

NoseProstheses and ImplantsAdultAirway ResistanceContinuous Positive Airway PressureEquipment SafetyExhalationFemaleHumansMaleMiddle AgedPilot ProjectsPolysomnographyPosturePredictive Value of TestsProsthesis DesignExpiratory positive airway pressurenasal valveobstructive sleep apneasleep apnea therapy

Identifiers

PMID21344051
PMCPMC3041626

What OpenQuestion holds

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Registered trials

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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.