Evidence map›Paper›PMID 32646945›Full record

SynthesisAJNR. American journal of neuroradiology2020

The Risk of Stroke and TIA in Nonstenotic Carotid Plaques: A Systematic Review and Meta-Analysis.

N Singh, M Marko, J M Ospel, M Goyal, M Almekhlafi

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in AJNR. American journal of neuroradiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Covert macrovascular disease and early outcome after ischemic cerebrovascular events.Clinical research in cardiology : official journal of the German Cardiac Society · 2026
    Observational
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Use of optical coherence tomography in selected patients with recurrent cryptogenic stroke: A case series and technical discussion.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025
    Article
  13. Article
  14. Article
  15. The role of non-stenosing carotid artery plaques in embolic stroke of undetermined source, is it a silent offender? A review of literature.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2024
    Review
  16. Article
  17. Review
  18. QSM Throughout the Body.Journal of magnetic resonance imaging : JMRI · 2023
    Review
  19. Low-grade carotid artery stenosis is associated with progression of brain atrophy and cognitive decline. The SMART-MR study.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2023
    Article
  20. Article
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

5 authors.

N SinghFrom the Departments of Clinical Neurosciences (N.S., M.M., J.M.O., M.G., M.A.), and Diagnostic Imaging (M.G., M.A.), Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada nishitaneurology@gmail.com.ORCID 0000-0003-3647-0904
M MarkoFrom the Departments of Clinical Neurosciences (N.S., M.M., J.M.O., M.G., M.A.), and Diagnostic Imaging (M.G., M.A.), Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada.ORCID 0000-0002-9063-0465
J M OspelFrom the Departments of Clinical Neurosciences (N.S., M.M., J.M.O., M.G., M.A.), and Diagnostic Imaging (M.G., M.A.), Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada.ORCID 0000-0003-0029-6764
M GoyalFrom the Departments of Clinical Neurosciences (N.S., M.M., J.M.O., M.G., M.A.), and Diagnostic Imaging (M.G., M.A.), Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada.ORCID 0000-0001-9060-2109
M AlmekhlafiFrom the Departments of Clinical Neurosciences (N.S., M.M., J.M.O., M.G., M.A.), and Diagnostic Imaging (M.G., M.A.), Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada.ORCID 0000-0001-9550-8197

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSevere carotid stenosis carries a high risk of stroke. However, the risk of stroke with nonstenotic carotid plaques (<50%) is increasingly recognized. PURPOSE: We aimed to summarize the risk of TIA or stroke in patients with nonstenotic carotid plaques. DATA SOURCES: We performed a comprehensive systematic review and meta-analysis in patients with acute ischemic stroke in whom carotid imaging was performed using MEDLINE and the Cochrane Database, including studies published up to December 2019. STUDY SELECTION: Included studies had >10 patients with <50% carotid plaques on any imaging technique and reported the incidence or recurrence of ischemic stroke/TIA. High-risk plaque features and the risk of progression to stenosis >50% were extracted if reported. DATA SYNTHESIS: We identified 31 studies reporting on the risk of ipsilateral stroke/TIA in patients with nonstenotic carotid plaques. Twenty-five studies ( DATA ANALYSIS: The incidence of first-ever ipsilateral stroke/TIA was 0.5/100 person-years. The risk of recurrent stroke/TIA was 2.6/100 person-years and increased to 4.9/100 person-years if intraplaque hemorrhage was present. The risk of progression to severe stenosis (>50%) was 2.9/100 person-years (8 studies, LIMITATIONS: Included studies showed heterogeneity in reporting stroke etiology, the extent of stroke work-up, imaging modalities, and classification systems used for characterizing carotid stenosis.

conclusionsThe risk of recurrent stroke/TIA in nonstenotic carotid plaques is not negligible, especially in the presence of high-risk plaque features. Further research is needed to better define the significance of nonstenotic carotid plaques for stroke etiology.

Indexed as

AgedCarotid ArteriesFemaleHumansIncidenceIschemic Attack, TransientMaleMiddle AgedPlaque, AtheroscleroticRisk FactorsStroke

Identifiers

PMID32646945
PMCPMC7658878

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.