Evidence map›Paper›PMID 17434095›Full record

Trial reportThe Lancet. Neurology2007

Low-molecular-weight heparin compared with aspirin for the treatment of acute ischaemic stroke in Asian patients with large artery occlusive disease: a randomised study.

Ka Sing Wong, Christopher Chen, Ping Wing Ng, Tak Hong Tsoi, Ho Lun Li, Wing Chi Fong, Jonas Yeung, Chi Keung Wong, Kin Keung Yip, Hong Gao and 2 more

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The Lancet. Neurology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 7 pooled it
7.3field-weighted citation impact, top 2% 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

42 citing papers in PubMed, 7 syntheses or guidelines pooled it, 140 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Stroke management.BMJ clinical evidence · 2011
    Pooled it
  7. Guideline
  8. Trial
  9. Trial
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Venous thromboembolism prevention with low molecular weight heparin may reduce hemorrhagic transformation in acute ischemic stroke.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2020
    Article
  18. Intracranial atherosclerotic disease.Neurobiology of disease · 2019
    Review
  19. Article
  20. Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 8 institutions in 2 countries.

Ka Sing WongDepartment of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China. ks-wong@cuhk.edu.hk
Christopher Chen
Ping Wing Ng
Tak Hong Tsoi
Ho Lun Li
Wing Chi Fong
Jonas Yeung
Chi Keung Wong
Kin Keung Yip
Hong Gao
Hwee Bee Wong
FISS-tris Study Investigators
Singapore Clinical Research Institute · SGAlice Ho Miu Ling Nethersole Hospital · CNChinese University of Hong Kong · CNPamela Youde Nethersole Eastern Hospital · CNQueen Elizabeth Hospital · CNRuttonjee Hospital · CNSingapore General Hospital · SGUnited Christian Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAcute stroke patients with large artery occlusive disease (LAOD) have a distinct pathophysiology and may respond differently to anticoagulation treatments. We compared the efficacy of a low-molecular-weight heparin (LMWH), nadroparin calcium, with aspirin in Asian acute stroke patients with LAOD.

methodsAcute ischaemic stroke patients with onset of symptoms less than 48 h and LAOD (diagnosed by transcranial doppler imaging, carotid duplex scan, or magnetic resonance angiography) were recruited. Patients were randomly assigned to receive either subcutaneous nadroparin calcium 3800 anti-factor Xa IU/0.4 mL twice daily or oral aspirin 160 mg daily for 10 days, and then all received aspirin 80-300 mg once daily for 6 months. This study is registered at www.strokecenter.org/trials (number 493).

findingsAmong 603 patients recruited, 353 (180 LMWH, 173 aspirin) had LAOD (300 had intracranial LAOD only, 42 had both intracranial and extracranial disease, and 11 had extracranial disease only). The proportion of patients with good outcomes at 6 months (Barthel index >or=85) was 73% in the LMWH group and 69% in the aspirin group (absolute risk reduction 4%; 95% CI -5 to 13). Analysis of prespecified secondary outcome measures showed a benefit in outcome for LMWH versus aspirin on the modified Rankin scale dichotomised at 0-1 (odds ratio 1.55, 95% CI 1.02-2.35). Haemorrhagic transformation of infarct and severe adverse events were similar in both groups. Post-hoc analyses of patients without LAOD, and all treated patients, showed similar proportions with a good outcome in aspirin and LMWH groups (78%vs 79% and 73%vs 75%, respectively).

interpretationOverall, the results do not support a significant benefit of LMWH over aspirin in patients with LAOD. The benefits indicated in most outcome measures warrant further investigation into the use of anticoagulation for acute stroke in patients with large artery atherosclerosis, particularly in intracranial atherosclerosis.

Indexed as

Asian PeopleAdministration, OralAdultAgedAged, 80 and overAnticoagulantsArterial Occlusive DiseasesAspirinBrain IschemiaFemaleHemorrhageHumansInjections, SubcutaneousMaleMiddle AgedNadroparinAnticoagulantsAspirinNadroparin

Identifiers

PMID17434095
PMCPMC7185651
OpenAlexW2155338975

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.