Evidence map›Paper›PMID 38511386›Full record

SynthesisStroke2024

Individual Patient Data Meta-Analysis of Dynamic Cerebral Autoregulation and Functional Outcome After Ischemic Stroke.

Lucy Beishon, Terrie Vasilopoulos, Angela S M Salinet, Brooke Levis, Samuel Barnes, Eleanor Hills, Pranav Ramesh, Panagoula Gkargkoula, Jatinder S Minhas, Pedro Castro and 13 more

Open access · hybridAbstract readMeta-Analysis
In one paragraph

Synthesis in Stroke, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
5.5field-weighted citation impact, top 3% 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, 15 citations in OpenAlex.

  1. Article
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  6. Review
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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

23 authors at 16 institutions in 11 countries.

Lucy BeishonDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).ORCID 0000-0002-3140-8688
Terrie VasilopoulosDepartment of Anesthesiology, University of Florida College of Medicine, Gainesville (T.V.).ORCID 0000-0002-8066-2703
Angela S M SalinetNeurology Department, Hospital das Clinicas, School of Medicine, University of Sao Paulo, Brazil (A.S.M.S., R.C.N.).ORCID 0000-0002-4192-5160
Brooke LevisLady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada (B.L.).
Samuel BarnesDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).ORCID 0000-0001-6009-406X
Eleanor HillsDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).
Pranav RameshDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).ORCID 0000-0001-8936-7092
Panagoula GkargkoulaDepartment of Stroke Medicine, University Hospitals of Leicester NHS Trust, Leicester, United Kingdom (S.B., P.G.).
Jatinder S MinhasDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).ORCID 0000-0002-0576-9105
Pedro CastroDepartment of Neurology, Centro Hospitalar Universitário de São João, Faculty of Medicine, University of Porto (P.C.).ORCID 0000-0003-1401-2398
Patrice BrassardDépartement de Kinésiologie, Faculté de Médecine, Institut Universitaire de Cardiologie et de pneumologie de Québec (P.B.).
Nicolai GoettelDepartment of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (N.G.).ORCID 0000-0003-0191-9775
Erik D GommerDepartment of Clinical Neurophysiology, Maastricht University Medical Centre, the Netherlands (E.D.G.).ORCID 0000-0003-1054-2682
Jose Luis JaraDepartamento de Ingeniería Informática, Universidad de Santiago de Chile (J.L.J.).ORCID 0000-0002-3348-7017
Jia LiuShenzhen Institutes of Advanced Technology at the Chinese Academy of Sciences in Shenzhen, China (J.L.).ORCID 0000-0003-0672-3202
Martin MuellerDepartment of Neurology and Neurorehabilitation, Spitalstrasse, CH 6000 Lucerne (M.M.).
Nathalie NasrDepartment of Neurology, Poitiers University Hospital, Laboratoire de Neurosciences Expérimentales et Cliniques, University of Poitiers, France (N.N.).
Stephen PayneInstitute of Applied Mechanics, National Taiwan University, Taipei (S.P.).ORCID 0000-0003-1156-2810
Andrew D RobertsonSchlegel-UW Research Institute for Aging, University of Waterloo, ON, CA (A.D.R.).ORCID 0000-0002-9095-9877
David SimpsonFaculty of Engineering and Physical Sciences, University of Southampton (D.S.).ORCID 0000-0001-9072-5088
Thompson G RobinsonDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).ORCID 0000-0003-2144-2468
Ronney B PaneraiDepartment of Cardiovascular Sciences, University of Leicester, United Kingdom (L.B., S.B., E.H., P.R., J.S.M., T.G.R., R.B.P.).
Ricardo C NogueiraNeurology Department, Hospital das Clinicas, School of Medicine, University of Sao Paulo, Brazil (A.S.M.S., R.C.N.).ORCID 0000-0003-3309-3760
University of Leicester · GBHospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRBrigham and Women's Hospital · USHospital de São João · PTInstitut universitaire de cardiologie et de pneumologie de Québec · CAJewish General Hospital · CAMaastricht University Medical Centre · NLNational Taiwan University · TWResearch Institute for Aging · CAShenzhen Institutes of Advanced Technology · CNUniversidad de Santiago de Chile · CLUniversité de Poitiers · FRUniversity Hospitals of Leicester NHS Trust · GBUniversity of Florida · USUniversity of Lucerne · CHUniversity of Southampton · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundThe relationship between dynamic cerebral autoregulation (dCA) and functional outcome after acute ischemic stroke (AIS) is unclear. Previous studies are limited by small sample sizes and heterogeneity.

methodsWe performed a 1-stage individual patient data meta-analysis to investigate associations between dCA and functional outcome after AIS. Participating centers were identified through a systematic search of the literature and direct invitation. We included centers with dCA data within 1 year of AIS in adults aged over 18 years, excluding intracerebral or subarachnoid hemorrhage. Data were obtained on phase, gain, coherence, and autoregulation index derived from transfer function analysis at low-frequency and very low-frequency bands. Cerebral blood velocity, arterial pressure, end-tidal carbon dioxide, heart rate, stroke severity and sub-type, and comorbidities were collected where available. Data were grouped into 4 time points after AIS: <24 hours, 24 to 72 hours, 4 to 7 days, and >3 months. The modified Rankin Scale assessed functional outcome at 3 months. Modified Rankin Scale was analyzed as both dichotomized (0 to 2 versus 3 to 6) and ordinal (modified Rankin Scale scores, 0-6) outcomes. Univariable and multivariable analyses were conducted to identify significant relationships between dCA parameters, comorbidities, and outcomes, for each time point using generalized linear (dichotomized outcome), or cumulative link (ordinal outcome) mixed models. The participating center was modeled as a random intercept to generate odds ratios with 95% CIs.

resultsThe sample included 384 individuals (35% women) from 7 centers, aged 66.3±13.7 years, with predominantly nonlacunar stroke (n=348, 69%). In the affected hemisphere, higher phase at very low-frequency predicted better outcome (dichotomized modified Rankin Scale) at <24 (crude odds ratios, 2.17 [95% CI, 1.47-3.19];

conclusionsGreater transfer function analysis-derived phase was associated with improved functional outcome at 3 months after AIS. dCA parameters in the early phase of AIS may help to predict functional outcome.

Indexed as

Brain IschemiaCerebrovascular CirculationHomeostasisIschemic StrokeRecovery of FunctionAgedFemaleHumansMaleMiddle Agedacute strokeautoregulationcerebrovascular strokemeta-analysistranscranial Doppler ultrasonography

Identifiers

PMID38511386
PMCPMC7615849
OpenAlexW4393055163

What OpenQuestion holds

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LicenceCC BY
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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.