Evidence map›Paper›PMID 30352632›Full record

SynthesisEuropean journal of medical research2018

Frequency of atrial thrombus formation in patients with atrial fibrillation under treatment with non-vitamin K oral anticoagulants in comparison to vitamin K antagonists: a systematic review and meta-analysis.

Stefan Reers, Georg Karanatsios, Matthias Borowski, Michael Kellner, Michael Reppel, Johannes Waltenberger

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in European journal of medical research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.7field-weighted citation impact, top 14% 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

12 citing papers in PubMed, 25 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 3 institutions in 1 country.

Stefan ReersDepartment of Cardiovascular Medicine, University Hospital Münster, 48149, Münster, Germany. stefan.reers@gmx.de.ORCID http://orcid.org/0000-0003-3503-3374
Georg KaranatsiosDepartment of Cardiovascular Medicine, University Hospital Münster, 48149, Münster, Germany.
Matthias BorowskiInstitute of Biostatistics and Clinical Research, University of Münster, Münster, Germany.
Michael KellnerNeurologic Clinic, St. Vincenz-Krankenhaus, Paderborn, Germany.
Michael ReppelMedical Practice for Cardiology and Angiology Landsberg, Landsberg am Lech, Germany.
Johannes WaltenbergerDepartment of Cardiovascular Medicine, University Hospital Münster, 48149, Münster, Germany.
University Hospital Münster · DESt. Vincenz-Krankenhaus Limburg · DEUniversity of Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo assess the frequency of left atrium/left atrial appendage (LA/LAA) thrombus under treatment with non-vitamin K oral anticoagulants (NOACs) in comparison with vitamin K antagonists (VKAs) in patients with non-valvular atrial fibrillation (AF).

methodsPubMed, Web of Science™, EMBASE and the Cochrane Library databases were searched for studies comparing NOACs with VKAs in AF patients who underwent diagnostic transoesophageal echocardiography (TEE).

resultsA total of four trials were considered eligible and were included in the meta-analysis. Four RCTs comprising n = 2397 AF patients (NOACs: n = 1412, VKAs: n = 985) were included in the meta-analysis. The frequency of LA/LAA thrombus formation under treatment with NOACs was similar to VKAs [odds ratio (OR) 1.14, 95% confidence intervals (95% CIs) 0.97-1.65, p = 0.48]. Both treatment groups revealed an approximately 5% frequency of thrombus formation, although a precise calculation is not possible due to Simpson paradox. Indications of heterogeneity between the included trials were not found (χ

conclusionsThe findings of this meta-analysis suggest that NOACs are similar to VKAs regarding the frequency of LA/LAA thrombus in patients with AF. An unknown number of patients in the original studies did not receive sufficient anticoagulation for at least 3 weeks prior to TEE examination, and therefore the present results should be interpreted with caution. Systematic review registration- http://www.crd.york.ac.uk/PROSPERO . Unique identifier: PROSPERO CRD42017059293.

Indexed as

Administration, OralAnticoagulantsAtrial FibrillationBlood CoagulationHeart AtriaHumansPubMedThrombosisVitamin KAnticoagulantsVitamin KAtrial fibrillationNOACNon-vitamin K antagonist oral anticoagulantsThrombus

Identifiers

PMID30352632
PMCPMC6198509
OpenAlexW2896638031

What OpenQuestion holds

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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.