Evidence map›Paper›PMID 32719933›Full record

ArticleMedical & biological engineering & computing2020

Acoustic characterization of upper airway variations from wakefulness to sleep with respect to obstructive sleep apnea.

Farahnaz Hajipour, Eleni Giannouli, Zahra Moussavi

Abstract read
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In one paragraph

Article in Medical & biological engineering & computing, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact, top 88% 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

0 citing papers in PubMed, 0 citations in OpenAlex.

No citing paper in PubMed yet.

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

3 authors at 1 institution in 1 country.

Farahnaz HajipourBiomedical Engineering Program, University of Manitoba, Winnipeg, MB, Canada. Hajipouf@myumanitoba.ca.ORCID http://orcid.org/0000-0002-5531-757X
Eleni GiannouliDepartment of Internal Medicine, Section of Respirology, University of Manitoba, Winnipeg, MB, Canada.
Zahra MoussaviBiomedical Engineering Program, University of Manitoba, Winnipeg, MB, Canada.
University of Manitoba · CA

Funding

Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada RGPIN-2017-05484
6 · The paper itself

Abstract

The upper airway (UA) is in general thicker and narrower in obstructive sleep apnea (OSA) population than in normal. Additionally, the UA changes during sleep are much more in the OSA population. The UA changes can alter the tracheal breathing sound (TBS) characteristics. Therefore, we hypothesize the TBS changes from wakefulness to sleep are significantly correlated to the OSA severity; thus, they may represent the physiological characteristics of the UA. To investigate our hypothesis, we recorded TBS of 18 mild-OSA (AHI < 15) and 22 moderate/severe-OSA (AHI > 15) during daytime (wakefulness) and then during sleep. The power spectral density (PSD) of the TBS was calculated and compared within the two OSA groups and between wakefulness and sleep. The average PSD of the mild-OSA group in the low-frequency range (< 280 Hz) was found to be decreased significantly from wakefulness to sleep (p-value < 10

Indexed as

AcousticsSignal Processing, Computer-AssistedAdultFemaleHumansMaleMiddle AgedRespirationSleepSleep Apnea, ObstructiveTracheaWakefulnessAcoustic investigationObstructive sleep apneaPower spectral analysisTracheal breathing sounds

Identifiers

PMID32719933
OpenAlexW3045846220

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.