Evidence map›Paper›PMID 34142339›Full record

ArticleNeurocritical care2021

Hemodynamic Status During Endovascular Stroke Treatment: Association of Blood Pressure with Functional Outcome.

Min Chen, Dorothea Kronsteiner, Johannes Pfaff, Simon Schieber, Laura Jäger, Martin Bendszus, Meinhard Kieser, Markus A Möhlenbruch, Peter A Ringleb, Julian Bösel and 1 more

Abstract read
In one paragraph

Article in Neurocritical care, 2021. 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
–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

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

  1. Intensive versus less intensive blood pressure targets after mechanical thrombectomy in acute ischemic stroke: a systematic review and network meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Pooled it
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  10. Blood Pressure Goals in Acute Stroke.American journal of hypertension · 2022
    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

11 authors.

Min ChenDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany. min.chen@med.uni-heidelberg.de.ORCID 0000-0001-9079-9298
Dorothea KronsteinerInstitute of Medical Biometry and Informatics, Heidelberg University, Heidelberg, Germany.
Johannes PfaffDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
Simon SchieberDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.
Laura JägerDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.
Martin BendszusDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
Meinhard KieserInstitute of Medical Biometry and Informatics, Heidelberg University, Heidelberg, Germany.
Markus A MöhlenbruchDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
Peter A RinglebDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.
Julian BöselDepartment of Neurology, Kassel General Hospital, Kassel, Germany.
Silvia SchönenbergerDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOptimal blood pressure (BP) management during endovascular stroke treatment in patients with large-vessel occlusion is not well established. We aimed to investigate associations of BP during different phases of endovascular therapy with reperfusion and functional outcome.

methodsWe performed a post hoc analysis of a single-center prospective study that evaluated a new simplified procedural sedation standard during endovascular therapy (Keep Evaluating Protocol Simplification in Managing Periinterventional Light Sedation for Endovascular Stroke Treatment). BP during endovascular therapy in patients was managed according to protocol. Data from four different phases (baseline, pre-recanalization, post recanalization, and post intervention) were obtained, and mean BP values, as well as changes in BP between different phases and reductions in systolic BP (SBP) and mean arterial pressure (MAP) from baseline to pre-recanalization, were used as exposure variables. The main outcome was a modified Rankin Scale score of 0-2 three months after admission. Secondary outcomes were successful reperfusion and change in the National Institutes of Health Stroke Scale score after 24 h. Multivariable linear and logistic regression models were used for statistical analysis.

resultsFunctional outcomes were analyzed in 139 patients with successful reperfusion (defined as thrombolysis in cerebral infarction grade 2b-3). The mean (standard deviation) age was 76 (10.9) years, the mean (standard deviation) National Institutes of Health Stroke Scale score was 14.3 (7.5), and 70 (43.5%) patients had a left-sided vessel occlusion. Favorable functional outcome (modified Rankin Scale score 0-2) was less likely with every 10-mm Hg increase in baseline (odds ratio [OR] 0.76, P = 0.04) and pre-recanalization (OR 0.65, P = 0.011) SBP. This was also found for baseline (OR 0.76, P = 0.05) and pre-recanalization MAP (OR 0.66, P = 0.03). The maximum Youden index in a receiver operating characteristics analysis revealed an SBP of 163 mm Hg and MAP of 117 mm Hg as discriminatory thresholds during the pre-recanalization phase to predict functional outcome.

conclusionsIn our protocol-based setting, intraprocedural pre-recanalization BP reductions during endovascular therapy were not associated with functional outcome. However, higher intraprocedural pre-recanalization SBP and MAP were associated with worse functional outcome. Prospective randomized controlled studies are needed to determine whether BP is a feasible treatment target for the modification of outcomes.

Indexed as

Brain IschemiaEndovascular ProceduresStrokeAgedBlood PressureHumansProspective StudiesRetrospective StudiesTreatment OutcomeAcute ischemic strokeBlood pressureThrombectomy

Identifiers

PMID34142339
PMCPMC8692300

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.