Evidence map›Paper›PMID 33938027›Full record

ArticleAnnals of neurology2021

Preservation of Brain Activity in Unresponsive Patients Identifies MCS Star.

Aurore Thibaut, Rajanikant Panda, Jitka Annen, Leandro R D Sanz, Lionel Naccache, Charlotte Martial, Camille Chatelle, Charlène Aubinet, Estelle A C Bonin, Alice Barra and 6 more

Open access · hybridAbstract read
In one paragraph

Article in Annals of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 3 pooled it
14.8field-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

73 citing papers in PubMed, 3 syntheses or guidelines pooled it, 131 citations in OpenAlex.

  1. Pooled it
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  6. Covert brain complexity in the intensive care unit.Cortex; a journal devoted to the study of the nervous system and behavior · 2026
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  20. The clinical features andFrontiers in neurology · 2025
    Article

13 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

16 authors at 3 institutions in 3 countries.

Aurore ThibautComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.ORCID 0000-0001-5991-1747
Rajanikant PandaComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Jitka AnnenComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Leandro R D SanzComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.ORCID 0000-0001-5054-2471
Lionel NaccachePICNIC Lab, Institut du cerveau, INSERM U1127, Sorbonne Université, Paris, France.ORCID 0000-0002-2874-1009
Charlotte MartialComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Camille ChatelleComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Charlène AubinetComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.ORCID 0000-0001-5095-5583
Estelle A C BoninComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Alice BarraComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Marie-Michèle BriandComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Benedetta CecconiComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Sarah WannezComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Johan StenderDepartment of Neurology, Bispebjerg Hospital, Copenhagen, Denmark.
Steven LaureysComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
Olivia GosseriesComa Science Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
University of Liège · BEBispebjerg Hospital · DKInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveBrain-injured patients who are unresponsive at the bedside (ie, vegetative state/unresponsive wakefulness syndrome - VS/UWS) may present brain activity similar to patients in minimally conscious state (MCS). This peculiar condition has been termed "non-behavioural MCS" or "MCS*". In the present study we aimed to investigate the proportion and underlying brain characteristics of patients in MCS*.

methodsBrain

results67% of behavioural VS/UWS presented a partial preservation of brain metabolism (ie, MCS*). Compared to VS/UWS patients, MCS* patients demonstrated a better outcome, global functional connectivity and grey matter preservation more compatible with the diagnosis of MCS. MCS* patients presented lower brain metabolism mostly in the posterior brain regions compared to MCS patients.

interpretationMCS* is a frequent phenomenon that is associated with better outcome and better brain preservation than the diagnosis of VS/UWS. Complementary exams should be provided to all unresponsive patients before taking medical decisions. ANN NEUROL 2021;90:89-100.

Indexed as

AdultAgedBrainConsciousnessFemaleHumansMaleMiddle AgedPersistent Vegetative StatePositron-Emission TomographyYoung Adult

Identifiers

PMID33938027
PMCPMC8252577
OpenAlexW3159612269

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.