Evidence map›Paper›PMID 35226054›Full record

SynthesisJAMA neurology2022

Neurologic Prognostication After Cardiac Arrest Using Brain Biomarkers: A Systematic Review and Meta-analysis.

Ryan L Hoiland, Kiran J K Rikhraj, Sharanjit Thiara, Christopher Fordyce, Andreas H Kramer, Markus B Skrifvars, Cheryl L Wellington, Donald E Griesdale, Nicholas A Fergusson, Mypinder S Sekhon

Registry-linked trialOpen access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in JAMA neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07782216 (Investigating the Significance of Protein Biomarkers During the Hyperacute Phase of Traumatic Brain Injury and Other CNS Conditions With Hypoxia/Hypoperfusion in Emergency and Prehospital Settings), which is not on this map. Cited by 57 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed, 2 pooled it
25.8field-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.

NCT07782216 recruitingnot on this mapstarted 2026, after this paper: background citation

Investigating the Significance of Protein Biomarkers During the Hyperacute Phase of Traumatic Brain Injury and Other CNS Conditions With Hypoxia/Hypoperfusion in Emergency and Prehospital Settings (CHARON)

TypeobservationalSponsorUniversity of PecsRan2026 to 2028Enrolled477ConditionsBrain Injuries, Traumatic, Brain Injuries, Acute, Hypoxia, Brain, Cardiac Arrest (CA)
3 · Its place in the literature

Who cites it

57 citing papers in PubMed, 2 syntheses or guidelines pooled it, 107 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Observational
  13. Observational
  14. Article
  15. Metabolism-Mediated Regulation of Brain-Heart Interactions.International journal of molecular sciences · 2026
    Review
  16. White matter injury after brain ischemia.Experimental neurology · 2026
    Review
  17. Article
  18. Review
  19. Review
  20. Article
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 4 institutions in 2 countries.

Ryan L HoilandDepartment of Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Kiran J K RikhrajDepartment of Emergency Medicine, Faculty of Medicine, University of British Columbia, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Sharanjit ThiaraDivision of Critical Care Medicine, Department of Medicine, Faculty of Medicine, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Christopher FordyceDivision of Cardiology, Department of Medicine, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Andreas H KramerDepartment of Critical Care Medicine, Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada.
Markus B SkrifvarsDepartment of Emergency Medicine and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
Cheryl L WellingtonInternational Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.
Donald E GriesdaleDepartment of Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Nicholas A FergussonFaculty of Medicine, University of British Columbia, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Mypinder S SekhonInternational Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.
University of British Columbia · CAUniversity of Calgary · CAUniversity of Helsinki · FIVancouver Coastal Health · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

importanceBrain injury biomarkers released into circulation from the injured neurovascular unit are important prognostic tools in patients with cardiac arrest who develop hypoxic ischemic brain injury (HIBI) after return of spontaneous circulation (ROSC).

objectiveTo assess the neuroprognostic utility of bloodborne brain injury biomarkers in patients with cardiac arrest with HIBI. DATA SOURCES: Studies in electronic databases from inception to September 15, 2021. These databases included MEDLINE, Embase, Evidence-Based Medicine Reviews, CINAHL, Cochrane Database of Systematic Reviews, and the World Health Organization Global Health Library. STUDY SELECTION: Articles included in this systmatic review and meta-analysis were independently assessed by 2 reviewers. We included studies that investigated neuron-specific enolase, S100 calcium-binding protein β, glial fibrillary acidic protein, neurofilament light, tau, or ubiquitin carboxyl hydrolase L1 in patients with cardiac arrest aged 18 years and older for neurologic prognostication. We excluded studies that did not (1) dichotomize neurologic outcome as favorable vs unfavorable, (2) specify the timing of blood sampling or outcome determination, or (3) report diagnostic test accuracy or biomarker concentration. DATA EXTRACTION AND SYNTHESIS: Data on the study design, inclusion and exclusion criteria, brain biomarkers levels, diagnostic test accuracy, and neurologic outcome were recorded. This study was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline. MAIN OUTCOMES AND MEASURES: Summary receiver operating characteristic curve analysis was used to calculate the area under the curve, sensitivity, specificity, and optimal thresholds for each biomarker. Risk of bias and concerns of applicability were assessed with the Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) tool.

resultsWe identified 2953 studies, of which 86 studies with 10 567 patients (7777 men [73.6] and 2790 women [26.4]; pooled mean [SD] age, 62.8 [10.2] years) were included. Biomarker analysis at 48 hours after ROSC demonstrated that neurofilament light had the highest predictive value for unfavorable neurologic outcome, with an area under the curve of 0.92 (95% CI, 0.84-0.97). Subgroup analyses of patients treated with targeted temperature management and those who specifically had an out-of-hospital cardiac arrest showed similar results (targeted temperature management, 0.92 [95% CI, 0.86-0.95] and out-of-hospital cardiac arrest, 0.93 [95% CI, 0.86-0.97]). CONCLUSIONS AND RELEVANCE: Neurofilament light, which reflects white matter damage and axonal injury, yielded the highest accuracy in predicting neurologic outcome in patients with HIBI at 48 hours after ROSC.

trial registrationPROSPERO Identifier: CRD42020157366.

Indexed as

Brain InjuriesHypothermia, InducedHypoxia-Ischemia, BrainOut-of-Hospital Cardiac ArrestBiomarkersBrainFemaleHumansMaleMiddle AgedPrognosisBiomarkers

Identifiers

PMID35226054
PMCPMC8886448
OpenAlexW4214695015

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.