Evidence map›Paper›PMID 36931806›Full record

SynthesisThe Lancet. Neurology2023

Admission systolic blood pressure and effect of endovascular treatment in patients with ischaemic stroke: an individual patient data meta-analysis.

Noor Samuels, Rob A van de Graaf, Maxim J H L Mulder, Scott Brown, Bob Roozenbeek, Pieter Jan van Doormaal, Mayank Goyal, Bruce C V Campbell, Keith W Muir, Nelly Agrinier and 14 more

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in The Lancet. Neurology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Blood pressure targets after successful reperfusion in mechanical thrombectomy for acute ischemic stroke: an updated systematic review and meta-analysis of randomized clinical trials.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
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  5. Blood pressure management for stroke patients beyond the JSH 2025 guidelines.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

24 authors.

Noor SamuelsDepartment of Neurology, Erasmus MC University Medical Centre, Rotterdam, Netherlands; Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands; Department of Public Health, Erasmus MC University Medical Centre, Rotterdam, Netherlands. Electronic address: n.samuels@erasmusmc.nl.
Rob A van de GraafDepartment of Neurology, Erasmus MC University Medical Centre, Rotterdam, Netherlands; Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Maxim J H L MulderDepartment of Neurology, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Scott BrownBRIGHT Research Partners, Mooresville, NC, USA.
Bob RoozenbeekDepartment of Neurology, Erasmus MC University Medical Centre, Rotterdam, Netherlands; Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Pieter Jan van DoormaalDepartment of Radiology & Nuclear Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Mayank GoyalDepartments of Clinical Neuroscience and Radiology, Hotchkiss Brain Institute, Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
Bruce C V CampbellDepartment of Medicine and Neurology, Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia.
Keith W MuirInstitute of Neuroscience and Psychology, University of Glasgow, Queen Elizabeth University Hospital, Glasgow, UK.
Nelly AgrinierCentre Hospitalier Régional Universitaire Nancy, INSERM, Université de Lorraine, CIC, Epidémiologie clinique, Nancy, France.
Serge BracardDepartment of Diagnostic and Interventional Neuroradiology, University of Lorraine and University Hospital of Nancy, France.
Phil M WhiteInstitute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK.
Luis San RománNeuroradiology Service, Hospital Clinic of Barcelona, Barcelona, Spain.
Tudor G JovinDepartment of Neurology, Cooper University Hospital, Camden, NJ, USA.
Michael D HillDepartments of Clinical Neuroscience and Radiology, Hotchkiss Brain Institute, Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
Peter J MitchellDepartment of Radiology, Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia.
Andrew M DemchukDepartments of Clinical Neuroscience and Radiology, Hotchkiss Brain Institute, Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
Alain BonafeDepartment of Neuroradiology, Centre Hospitalier Universitaire de Montpellier-Guy de Chauliac, Montpellier, France.
Thomas G DevlinDepartment of Neurology, University of Tennessee College of Medicine, Chattanooga, TN, USA.
Adriaan C G M van EsDepartment of Radiology & Nuclear Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Hester F LingsmaDepartment of Public Health, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Diederik W J DippelDepartment of Neurology, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
Aad van der LugtDepartment of Radiology & Nuclear Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands.
HERMES Collaborators

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCurrent guidelines for ischaemic stroke treatment recommend a strict, but arbitrary, upper threshold of 185/110 mm Hg for blood pressure before endovascular thrombectomy. Nevertheless, whether admission blood pressure influences the effect of endovascular thrombectomy on outcome remains unknown. Our aim was to study the influence of admission systolic blood pressure (SBP) on functional outcome and on the effect of endovascular thrombectomy.

methodsWe used individual patient data from seven randomised controlled trials (MR CLEAN, ESCAPE, EXTEND-IA, SWIFT PRIME, REVASCAT, PISTE, and THRACE) that randomly assigned patients with anterior circulation ischaemic stroke to endovascular thrombectomy (predominantly using stent retrievers) or standard medical therapy (control) between June 1, 2010, and April 30, 2015. We included all patients for whom SBP data were available at hospital admission. The primary outcome was functional outcome (modified Rankin Scale) at 90 days. We assessed the association of SBP with outcome in both the endovascular thrombectomy group and the control group using multilevel regression analysis and tested for non-linearity and for interaction between SBP and effect of endovascular thrombectomy, taking into account treatment with intravenous thrombolysis.

findingsWe included 1753 patients (867 assigned to endovascular thrombectomy, 886 assigned to control) after excluding 11 patients for whom SBP data were missing. We found a non-linear association between SBP and functional outcome with an inflection point at 140 mm Hg (732 [42%] of 1753 patients had SBP <140 mm Hg and 1021 [58%] had SBP ≥140 mm Hg). Among patients with SBP of 140 mm Hg or higher, admission SBP was associated with worse functional outcome (adjusted common odds ratio [acOR] 0·86 per 10 mm Hg SBP increase; 95% CI 0·81-0·91). We found no association between SBP and functional outcome in patients with SBP less than 140 mm Hg (acOR 0·97 per 10 mm Hg SBP decrease, 95% CI 0·88-1·05). There was no significant interaction between SBP and effect of endovascular thrombectomy on functional outcome (p=0·96).

interpretationIn our meta-analysis, high admission SBP was associated with worse functional outcome after stroke, but SBP did not seem to negate the effect of endovascular thrombectomy. This finding suggests that admission SBP should not form the basis for decisions to withhold or delay endovascular thrombectomy for ischaemic stroke, but randomised trials are needed to further investigate this possibility.

fundingMedtronic.

Indexed as

Brain IschemiaEndovascular ProceduresIschemic StrokeStrokeBlood PressureHumansRandomized Controlled Trials as TopicThrombectomyTreatment Outcome

Identifiers

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.