Evidence map›Paper›PMID 34323023›Full record

ReviewPhysiological reports2021

Losing the dogmatic view of cerebral autoregulation.

Patrice Brassard, Lawrence Labrecque, Jonathan D Smirl, Michael M Tymko, Hannah G Caldwell, Ryan L Hoiland, Samuel J E Lucas, André Y Denault, Etienne J Couture, Philip N Ainslie

Open access · goldAbstract readReview
In one paragraph

Review in Physiological reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 102 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
102citing papers in PubMed, 5 pooled it
12.5field-weighted citation impact, top 1% 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

102 citing papers in PubMed, 5 syntheses or guidelines pooled it, 167 citations in OpenAlex.

  1. Pooled it
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  4. A systematic review, meta-analysisJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Pooled it
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  7. Exposure to passive heat and cold stress differentially modulates cerebrovascular-COJournal of applied physiology (Bethesda, Md. : 1985) · 2024
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42 more citing papers are in PubMed but not listed here.

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

10 authors at 6 institutions in 2 countries.

Patrice BrassardDepartment of Kinesiology, Faculty of Medicine, Université Laval, Québec, QC, Canada.ORCID 0000-0002-6254-5044
Lawrence LabrecqueDepartment of Kinesiology, Faculty of Medicine, Université Laval, Québec, QC, Canada.
Jonathan D SmirlSport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.ORCID 0000-0003-1054-0038
Michael M TymkoNeurovascular Health Laboratory, University of Alberta, Edmonton, AB, Canada.
Hannah G CaldwellCenter for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia - Okanagan, Kelowna, BC, Canada.
Ryan L HoilandDepartment of Cellular and Physiological Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.
Samuel J E LucasSchool of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom.ORCID 0000-0002-8713-2457
André Y DenaultDepartment of Anesthesiology and Critical Care Division, Montreal Heart Institute, Montreal, QC, Canada.
Etienne J CoutureResearch center of the Institut universitaire de cardiologie et de pneumologie de Québec, Québec, QC, Canada.
Philip N AinslieCenter for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia - Okanagan, Kelowna, BC, Canada.
Institut universitaire de cardiologie et de pneumologie de Québec · CAUniversity of British Columbia · CAMontreal Heart Institute · CAUniversity of Alberta · CAUniversity of Birmingham · GBUniversity of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In 1959, Niels Lassen illustrated the cerebral autoregulation curve in the classic review article entitled Cerebral Blood Flow and Oxygen Consumption in Man. This concept suggested a relatively broad mean arterial pressure range (~60-150 mmHg) wherein cerebral blood flow remains constant. However, the assumption that this wide cerebral autoregulation plateau could be applied on a within-individual basis is incorrect and greatly variable between individuals. Indeed, each data point on the autoregulatory curve originated from independent samples of participants and patients and represented interindividual relationships between cerebral blood flow and mean arterial pressure. Nonetheless, this influential concept remains commonly cited and illustrated in various high-impact publications and medical textbooks, and is frequently taught in medical and science education without appropriate nuances and caveats. Herein, we provide the rationale and additional experimental data supporting the notion we need to lose this dogmatic view of cerebral autoregulation.

Indexed as

Blood PressureCerebrovascular CirculationHomeostasisOxygen ConsumptionAnimalsHumansarterial blood pressureautoregulatory curvecerebral autoregulationcerebral blood flowLassen

Identifiers

PMID34323023
PMCPMC8319534
OpenAlexW3184555459

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.