Evidence map›Paper›PMID 34649296›Full record

ArticleThrombosis and haemostasis2022

Oral Anticoagulation Timing in Patients with Acute Ischemic Stroke and Atrial Fibrillation.

Po-Yin Chang, Wei-Ting Wang, Wei-Lun Wu, Hui-Chin Chang, Chen-Huan Chen, Yi-Wen Tsai, Shih-Hwa Chiou, Gregory Y H Lip, Hao-Min Cheng, Chern-En Chiang

Open access · hybridAbstract read
In one paragraph

Article in Thrombosis and haemostasis, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 12% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Anticoagulation Timing After Stroke in Atrial Fibrillation: Evidence from a Systematic Review and Meta-Analysis.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Pooled it
  2. Optimal timing of anticoagulation after ischemic stroke in atrial fibrillation: a systematic review and network meta-analysis.Clinical research in cardiology : official journal of the German Cardiac Society · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Review
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

10 authors at 4 institutions in 4 countries.

Po-Yin Chang *Office of Surveillance and Epidemiology, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Maryland, United States.
Wei-Ting Wang *Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei City, Taiwan.ORCID 0000-0002-2064-9523
Wei-Lun WuInstitute of Health and Welfare Policy, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Hui-Chin ChangInstitute of Health and Welfare Policy, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Chen-Huan ChenSchool of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Yi-Wen Tsai *Institute of Health and Welfare Policy, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Shih-Hwa ChiouDepartment of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Gregory Y H LipLiverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart and Chest Hospital, Liverpool, United Kingdom.ORCID 0000-0002-7566-1626
Hao-Min Cheng *Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei City, Taiwan.ORCID 0000-0002-3885-6600
Chern-En ChiangDivision of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei City, Taiwan.
National Yang Ming Chiao Tung University · TWTaipei Veterans General Hospital · TWUnited States Food and Drug Administration · USUniversity of Liverpool · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeOral anticoagulants (OACs) prevent stroke recurrence and vascular embolism in patients with acute ischemic stroke (AIS) and atrial fibrillation (AF). Based on empirical consensus, current guidance recommends a "1-3-6-12 days" rule to resume OACs after AIS. This study investigated the suitability of guideline-recommended timing for OAC initiation.

methodsUsing data of 12,307 AF patients hospitalized for AIS, for the period 2012 to 2016, in Taiwan's National Health Insurance Research Database, we constructed a sequence of cohorts of OAC users and propensity score-matched nonusers, creating one cohort on each day of OAC initiation for 30 days since admission. Composite outcome included effectiveness (cardiovascular death, ischemic stroke, myocardial infarction, transient ischemic attack, systemic embolism, and venous thromboembolism) and safety (intracranial hemorrhage, gastrointestinal bleeding, and hematuria) outcomes. Comparing with nonusers, we examined the risks in the early OAC use (within 1-3-6-12 days) or guideline-recommended delayed use. Indirect comparison between the early and delayed use was conducted using mixed treatment comparison.

resultsAcross the AIS severity, the risks of composite or effectiveness outcome were lower in OAC users than nonusers, and the risks were similar between the early and delayed use groups. In patients with severe AIS, early OAC use was associated with an increased risk of safety outcome, with a hazard ratio (HR) of 1.67 (confidence interval [CI]: 1·30-2·13) compared with nonusers and a HR of 1.44 (CI: 0·99-2·09) compared with the delayed use.

conclusionOur study findings support an early OAC initiation in AF patients with mild-to-moderate AIS and a routine delayed use of OACs can be considered in those with severe AIS to avoid a serious bleeding event.

Indexed as

Atrial FibrillationIschemic StrokeStrokeAdministration, OralAnticoagulantsHumansTreatment OutcomeAnticoagulants

Identifiers

PMID34649296
PMCPMC9251709
OpenAlexW3206156412

What OpenQuestion holds

Textmetadata
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.