Evidence map›Paper›PMID 32249371›Full record

ArticleSleep & breathing = Schlaf & Atmung2021

Polysomnographic characteristics of severe obstructive sleep apnea vary significantly between hypertensive and normotensive patients of both genders.

T Leppänen, A Kulkas, J Töyräs, S Myllymaa, N Gadoth, A Oksenberg

Open access · hybridAbstract read
In one paragraph

Article in Sleep & breathing = Schlaf & Atmung, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.2field-weighted citation impact, top 46% 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

5 citing papers in PubMed, 4 citations in OpenAlex.

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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

6 authors at 4 institutions in 3 countries.

T LeppänenDepartment of Applied Physics, University of Eastern Finland, P.O. Box 1627 (Canthia), FI-70211, Kuopio, Finland. timo.leppanen@uef.fi.
A KulkasDepartment of Applied Physics, University of Eastern Finland, P.O. Box 1627 (Canthia), FI-70211, Kuopio, Finland.
J TöyräsDepartment of Applied Physics, University of Eastern Finland, P.O. Box 1627 (Canthia), FI-70211, Kuopio, Finland.
S MyllymaaDepartment of Applied Physics, University of Eastern Finland, P.O. Box 1627 (Canthia), FI-70211, Kuopio, Finland.
N GadothSleep Disorders Unit, Loewenstein Hospital-Rehabilitation Center, Raanana, Israel.
A OksenbergSleep Disorders Unit, Loewenstein Hospital-Rehabilitation Center, Raanana, Israel.
Loewenstein Hospital Rehabilitation Center · ILUniversity of Eastern Finland · FISeinäjoki University of Applied Sciences · FIUniversity of Queensland · AU

Funding

Channelopathy 2020R13TR003221 · NCATS · OHIO STATE UNIVERSITY · PI DESCHENES, ISABELLE · 2020 to 2020
$25k
NCATS NIH HHS R13 TR003221
6 · The paper itself

Abstract

purposeHypertension is a common finding in patients with obstructive sleep apnea (OSA), but it has remained unclear whether or not the amount of disturbed breathing and characteristics of individual respiratory events differ between hypertensive and normotensive patients with severe OSA.

methodsFull polysomnographic recordings of 323 men and 89 women with severe OSA were analyzed. Differences in the duration of individual respiratory events, total apnea and hypopnea times, and the percentage of disturbed breathing from total sleep time (AHT%) were compared between normotensive and hypertensive patients separately by genders. Furthermore, differences in the respiratory event characteristics were assessed between three AHT% groups (AHT% ≤ 30%, 30% < AHT% ≤ 45%, and AHT% > 45%).

resultsHypertensive women had lower percentage apnea time (15.2% vs. 18.2%, p = 0.003) and AHT% (33.5% vs. 36.5%, p = 0.021) when compared with normotensive women. However, these differences were not observed between hypertensive and normotensive men. Percentage hypopnea time was higher in hypertensive men (13.5% vs. 11.2%, p = 0.043) but not in women (15.2% vs. 12.2%, p = 0.130) compared with their normotensive counterparts. The variation in AHI explained 60.5% (ρ = 0.778) and 65.0% (ρ = 0.806) of the variation in AHT% in normotensive and hypertensive patients, respectively. However, when AHT% increased, the capability of AHI to explain the variation in AHT% declined.

conclusionsThere is a major inter- and intra-gender variation in percentage apnea and hypopnea times between hypertensive and normotensive patients with severe OSA. OSA is an important risk factor for hypertension and thus, early detection and phenotyping of OSA would allow timely treatment of patients with the highest risk of hypertension.

Indexed as

AdultAgedComorbidityFemaleHumansHypertensionMaleMiddle AgedPolysomnographyRisk FactorsSeverity of Illness IndexSex FactorsSleep Apnea, ObstructiveTime FactorsApnea durationGenderHypertensionHypopnea durationOSAPhenotype

Identifiers

PMID32249371
PMCPMC7987592
OpenAlexW3015073015

What OpenQuestion holds

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LicenceCC BY
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.