Evidence map›Paper›PMID 32268853›Full record

Trial reportStroke2020

Improving Clinical Detection of Acute Lacunar Stroke: Analysis From the IST-3.

Francesco Arba, Grant Mair, Stephen Phillips, Peter Sandercock, Joanna M Wardlaw, Third International Stroke Trial Collaborators

Abstract readClinical Trial
In one paragraph

Trial report in Stroke, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
–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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Early neurological deterioration in acute lacunar ischemic stroke: Systematic review of incidence, mechanisms, and prospects for treatment.International journal of stroke : official journal of the International Stroke Society · 2025
    Pooled it
  2. Guideline
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  4. Trial
  5. Article
  6. Article
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  8. Review
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  10. Small-vessel disease in the brain.American heart journal plus : cardiology research and practice · 2023
    Article
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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.

Francesco ArbaFrom the Stroke Unit, AOU Careggi, Florence, Italy (F.A.).
Grant MairDivision of Neuroimaging Sciences, Brain Research Imaging Centre, University of Edinburgh, United Kingdom (G.M., J.M.W.).
Stephen PhillipsDivision of Neurology, Department of Medicine, Dalhousie University and Nova Scotia Health Authority, Halifax, Nova Scotia, Canada (S.P.).
Peter SandercockCentre for Clinical Brain Sciences, University of Edinburgh, Western General Hospital, United Kingdom (G.M., P.S., J.M.W.).
Joanna M WardlawDivision of Neuroimaging Sciences, Brain Research Imaging Centre, University of Edinburgh, United Kingdom (G.M., J.M.W.).
Third International Stroke Trial Collaborators

Funding

British Heart Foundation RE/18/5/34216Medical Research Council EME 09-800-15Medical Research Council G0400069Medical Research Council MC_G1002455
6 · The paper itself

Abstract

Background and Purpose- We aim to identify factors associated with imaging-confirmed lacunar strokes and improve their rapid clinical identification early after symptom onset using data from the IST-3 (Third International Stroke Trial). Methods- We selected patients likely to have lacunar infarcts as those presenting with: Oxfordshire Community Stroke Project lacunar syndrome; a random sample with National Institutes of Health Stroke Scale (NIHSS) score <7; and recent lacunar infarct identified on imaging by IST-3 central blinded expert panel. An independent reviewer rated brain scans of this sample and classified visible infarcts according to type, size, and location. We investigated factors associated with presence of lacunar infarct on a 24 to 48 hour follow-up scan using multivariable logistic regression and calculated sensitivity and specificity of Oxfordshire Community Stroke Project alone and in combination with NIHSS score <7. Results- We included 568 patients (330 lacunar syndrome; 147 with NIHSS score <7; 91 with lacunar infarct on baseline imaging, numbers exclude overlaps between groups), mean (±SD) age, 73.2 (±13.6) years, 316 (56%) males, and median NIHSS score 5 (IQR, 4-8). On 24 to 48 hour scan, 138 (24%) patients had lacunar infarcts, 176 (31%) other infarct subtypes, 254 (45%) no visible infarct. Higher baseline systolic blood pressure (odds ratio, 1.01 [95% CI, 1.01-1.02]) and preexisting lacunes (odds ratio, 2.29 [95% CI, 1.47-3.57) were associated with recent lacunar infarcts. Sensitivity and specificity of lacunar syndrome was modest (58% and 45%, respectively), but adding NIHSS score <7 increased specificity (99%), positive and negative predictive values (97% and 87%, respectively). Conclusions- In patients presenting within 6 hours of stroke onset, adding NIHSS score <7 to Oxfordshire Community Stroke Project lacunar syndrome classification may increase specificity for identifying lacunar stroke early after stroke onset. Our findings may help selection of patients for clinical trials of lacunar stroke and should be validated externally. Registration- URL: http://www.controlled-trials.com/; Unique identifier: ISRCTN25765518.

Indexed as

Acute DiseaseAgedAged, 80 and overFemaleHumansMaleMiddle AgedNeuroimagingOdds RatioRisk FactorsStroke, LacunarTime Factorsbraindiagnosislacunarsensitivityspecificitystroke

Identifiers

PMID32268853
PMCPMC7185055

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.