Evidence map›Paper›PMID 34848566›Full record

ArticleStroke and vascular neurology2022

Tranexamic acid for intracerebral haemorrhage within 2 hours of onset: protocol of a phase II randomised placebo-controlled double-blind multicentre trial.

Nawaf Yassi, Henry Zhao, Leonid Churilov, Bruce C V Campbell, Teddy Wu, Henry Ma, Andrew Cheung, Timothy Kleinig, Helen Brown, Philip Choi and 26 more

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in Stroke and vascular neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 11% 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 22 citations in OpenAlex.

  1. Pooled it
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  3. Observational
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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

36 authors at 20 institutions in 5 countries.

Nawaf YassiDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia nawaf.yassi@unimelb.edu.au.ORCID 0000-0002-0685-0060
Henry ZhaoDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0002-4320-4287
Leonid ChurilovDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0002-9807-6606
Bruce C V CampbellDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0003-3632-9433
Teddy WuDepartment of Neurology, Christchurch Hospital, Christchurch, New Zealand.ORCID 0000-0003-1845-1769
Henry MaDepartment of Neurology, Monash Medical Centre, Monash University, Clayton, Victoria, Australia.ORCID 0000-0002-0510-8059
Andrew CheungDepartment of Interventional Neuroradiology, Liverpool Hospital, Liverpool, New South Wales, Australia.ORCID 0000-0003-2815-9198
Timothy KleinigDepartment of Neurology, Royal Adelaide Hospital, Adelaide, South Australia, Australia.ORCID 0000-0003-4430-3276
Helen BrownDepartment of Neurology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.
Philip ChoiDepartment of Neurology, Box Hill Hospital, Eastern Health, Box Hill, Victoria, Australia.ORCID 0000-0003-0339-3439
Jiann-Shing JengStroke Centre and Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan.ORCID 0000-0002-1456-3686
Annemarei RantaDepartment of Medicine, Dunedin School of Medicine, University of Otago, Wellington, New Zealand.ORCID 0000-0002-3223-3330
Hao-Kuang WangDepartment of Neurosurgery, E-Da Hospital, Yanchao, Kaohsiung, Taiwan.ORCID 0000-0002-1928-7502
Geoffrey C CloudDepartment of Neurology, Alfred Hospital, Melbourne, Victoria, Australia.ORCID 0000-0002-8365-6907
Rohan GrimleyDepartment of Medicine, Sunshine Coast University Hospital, Nambour, Queensland, Australia.ORCID 0000-0002-7006-6908
Darshan ShahDepartment of Neurology, Gold Coast University Hospital, Southport, Queensland, Australia.ORCID 0000-0002-5254-219X
Neil SprattDepartment of Neurology, John Hunter Hospital, The University of Newcastle, Newcastle, New South Wales, Australia.ORCID 0000-0002-9023-6177
Der-Yang ChoDepartment of Neurosurgery, China Medical University Hospital, Taichung, Taiwan.ORCID 0000-0002-6429-3565
Karim MahawishDepartment of Internal Medicine, Palmerston North Hospital, Palmerston North, New Zealand.
Lauren SandersDepartment of Neurology, St Vincent's Hospital, Fitzroy, Victoria, Australia.ORCID 0000-0001-6420-0181
John WorthingtonDepartment of Neurology, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia.
Ben ClissoldDepartment of Neurology, Geelong Hospital, Geelong, Victoria, Australia.ORCID 0000-0002-9747-9817
Atte MeretojaDepartment of Neurology, Helsinki University Hospital, Helsinki, Finland.ORCID 0000-0001-6433-1931
Vignan YogendrakumarDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0001-8814-6853
Mai Duy TonStroke Center, Bach Mai Hospital, Hanoi, Viet Nam.ORCID 0000-0002-7540-0979
Duc Phuc DangStroke Department, 103 Military Hospital, Hanoi, Hanoi, Viet Nam.ORCID 0000-0002-8143-8041
Nguyen Thai My PhuongDepartment of Neurology, Nguyen Tri Phuong Hospital, Ho Chi Minh City, Viet Nam.
Huy-Thang NguyenDepartment of Cerebrovascular Disease, 115 Hospital, Ho Chi Minh City, Viet Nam.
Chung Y HsuDepartment of Neurology, China Medical University, Taichung, Taiwan.ORCID 0000-0002-5632-2733
Gagan SharmaDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.
Peter J MitchellDepartment of Radiology, Royal Melbourne Hospital, University of Melbourne, Melbourne, Victoria, Australia.
Bernard YanDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0001-8802-9606
Mark W ParsonsDepartment of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0001-8874-2487
Christopher LeviDepartment of Neurology, John Hunter Hospital, The University of Newcastle, Newcastle, New South Wales, Australia.ORCID 0000-0002-9474-796X
Geoffrey A Donnan *Department of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0001-6324-3403
Stephen M Davis *Department of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0003-0962-2300
The Royal Melbourne Hospital · AUChina Medical University · TWJohn Hunter Hospital · AUBạch Mai Hospital · VNBox Hill Hospital · AUChristchurch Hospital · NZE-Da Hospital · TWGeelong Hospital · AUGold Coast Hospital · AUHelsinki University Hospital · FIHung Vuong Hospital · VNLiverpool Hospital · AUMonash Medical Centre · AUNational Taiwan University Hospital · TWPalmerston North Hospital · NZPham Ngoc Thach Hospital · VNPrincess Alexandra Hospital · AURoyal Adelaide Hospital · AURoyal Prince Alfred Hospital · AUSt Vincent's Hospital Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleHaematoma growth is common early after intracerebral haemorrhage (ICH), and is a key determinant of outcome. Tranexamic acid, a widely available antifibrinolytic agent with an excellent safety profile, may reduce haematoma growth. METHODS AND

designStopping intracerebral haemorrhage with tranexamic acid for hyperacute onset presentation including mobile stroke units (STOP-MSU) is a phase II double-blind, randomised, placebo-controlled, multicentre, international investigator-led clinical trial, conducted within the estimand statistical framework. HYPOTHESIS: In patients with spontaneous ICH, treatment with tranexamic acid within 2 hours of onset will reduce haematoma expansion compared with placebo. SAMPLE SIZE ESTIMATES: A sample size of 180 patients (90 in each arm) would be required to detect an absolute difference in the primary outcome of 20% (placebo 39% vs treatment 19%) under a two-tailed significance level of 0.05. An adaptive sample size re-estimation based on the outcomes of 144 patients will allow a possible increase to a prespecified maximum of 326 patients.

interventionParticipants will receive 1 g intravenous tranexamic acid over 10 min, followed by 1 g intravenous tranexamic acid over 8 hours; or matching placebo. PRIMARY EFFICACY MEASURE: The primary efficacy measure is the proportion of patients with haematoma growth by 24±6 hours, defined as either ≥33% relative increase or ≥6 mL absolute increase in haematoma volume between baseline and follow-up CT scan. DISCUSSION: We describe the rationale and protocol of STOP-MSU, a phase II trial of tranexamic acid in patients with ICH within 2 hours from onset, based in participating mobile stroke units and emergency departments.

Indexed as

Cerebral HemorrhageTranexamic AcidAntifibrinolytic AgentsClinical Trials, Phase II as TopicHematomaHumansMulticenter Studies as TopicRandomized Controlled Trials as TopicStrokeTime FactorsAntifibrinolytic AgentsTranexamic AcidCThemorrhagestroke

Identifiers

PMID34848566
PMCPMC9067256
OpenAlexW3216541074

What OpenQuestion holds

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Registered trials

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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.