Evidence map›Paper›PMID 29489881›Full record

ArticlePloS one2018

Impairment of vascular strain in patients with obstructive sleep apnea.

Max Jonathan Stumpf, Christian Alexander Schaefer, Jan Krycki, Robert Schueler, Carmen Pizarro, Georg Nickenig, Martin Steinmetz, Dirk Skowasch, Izabela Tuleta

Abstract read
In one paragraph

Article in PloS one, 2018. 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
–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

5 citing papers in PubMed.

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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

9 authors.

Max Jonathan StumpfDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Christian Alexander SchaeferDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Jan KryckiDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Robert SchuelerDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Carmen PizarroDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Georg NickenigDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Martin SteinmetzDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Dirk SkowaschDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.
Izabela TuletaDepartment of Internal Medicine II-Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany.ORCID 0000-0002-8482-591X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObstructive sleep apnea (OSA) is an independent risk factor for the development of cardiovascular diseases. Aim of this present study was to evaluate and extend recent research on the influence of obstructive sleep apnea on vascular strain.

methodsA total number of 98 patients were integrated in the study. Patients were grouped according to the Apnea-Hypopnea-Index (AHI) in patients with mild-to-moderate OSA (5/h ≤ AHI < 30/h), severe OSA (AHI ≥ 30/h) and controls (AHI < 5/h). Groups were matched in age, body-mass-index and cardiovascular risks. Vascular strain of common carotid arteries was assessed by ultrasound speckle-tracking. A minor group of 30 patients and controls further underwent assessment of vascular strain of brachial and femoral arteries. Additionally, all patients underwent blood testing to reveal potential influences of inflammatory markers on arterial stiffness. In additional analysis we examined the effect of statin therapy on vascular strain.

resultsPatients with OSA showed significantly reduced values of vascular strain of common carotid arteries. Radial and circumferential strains were significantly lower in both patients with mild-to-moderate (p = .05) and patients with severe OSA (p = .001) compared to control. Vascular strain parameters of brachial and femoral arteries showed no consistent results. There were no significant correlations of inflammatory markers with vascular strain parameters. No significant differences in vascular strain were detected between statin and non-statin groups.

conclusionPatients with OSA show significantly reduced vascular strain assessed by ultrasound-based speckle-tracking. Vascular stiffness increases with the severity of the disease. Target vessels to assess vascular strain in patients with OSA are common carotid arteries, whereas other sites of the arterial tree are not reliable. No significant impact of current statin therapy on vascular strain was found. Further studies are needed to evaluate potential benefit of statins in secondary prevention of atherosclerosis in OSA.

Indexed as

ArteriesFemaleHumansMaleMiddle AgedPolysomnographyRisk FactorsSleep Apnea, ObstructiveSnoring

Identifiers

PMID29489881
PMCPMC5831412

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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.