Evidence map›Paper›PMID 35118644›Full record

Trial reportActa anaesthesiologica Scandinavica2022

Serum biomarkers of brain injury after uncomplicated cardiac surgery: Secondary analysis from a randomized trial.

Mikael Barbu, Kristján Jónsson, Henrik Zetterberg, Kaj Blennow, Oscar Kolsrud, Sven-Erik Ricksten, Göran Dellgren, Kerstin Björk, Anders Jeppsson

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Acta anaesthesiologica Scandinavica, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  11. Metabolism-Mediated Regulation of Brain-Heart Interactions.International journal of molecular sciences · 2026
    Review
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  20. Brain protective effect of dexmedetomidineWorld journal of psychiatry · 2024
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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

9 authors.

Mikael BarbuDepartment of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.ORCID https://orcid.org/0000-0001-9576-8976
Kristján JónssonDepartment of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
Henrik ZetterbergClinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.
Kaj BlennowClinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.
Oscar KolsrudDepartment of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
Sven-Erik RickstenDepartment of Cardiothoracic Anesthesia and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden.ORCID https://orcid.org/0000-0002-1445-7525
Göran DellgrenDepartment of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Kerstin BjörkDepartment of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
Anders JeppssonDepartment of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.ORCID https://orcid.org/0000-0003-2356-2295

Funding

Hjärt-Lungfonden 20180560Scientific Committee of Blekinge County Council's Research and Development Foundation 1777 3189 5012The Swedish state under the agreement between the Swedish Government and the county councils, the ALF-agreement ALF-GBG 725131Västra Götalandsregionen 14628Xvivo perfusion
6 · The paper itself

Abstract

backgroundPostoperative cognitive dysfunction is common after cardiac surgery. Postoperative measurements of brain injury biomarkers may identify brain damage and predict cognitive dysfunction. We describe the release patterns of five brain injury markers in serum and plasma after uncomplicated cardiac surgery.

methodsSixty-one elective cardiac surgery patients were randomized to undergo surgery with either a dextran-based prime or a crystalloid prime. Blood samples were taken immediately before surgery, and 2 and 24 h after surgery. Concentrations of the brain injury biomarkers S100B, glial fibrillary acidic protein (GFAP), tau, neurofilament light (NfL) and neuron-specific enolase (NSE)) and the blood-brain barrier injury marker β-trace protein were analyzed. Concentrations of brain injury biomarkers were correlated to patients' age, operation time, and degree of hemolysis.

resultsNo significant difference in brain injury biomarkers was observed between the prime groups. All brain injury biomarkers increased significantly after surgery (tau +456% (25th-75th percentile 327%-702%), NfL +57% (28%-87%), S100B +1145% (783%-2158%), GFAP +17% (-3%-43%), NSE +168% (106%-228%), while β-trace protein was reduced (-11% (-17-3%). Tau, S100B, and NSE peaked at 2h, NfL and GFAP at 24 h. Postoperative concentrations of brain injury markers correlated to age, operation time, and/or hemolysis.

conclusionUncomplicated cardiac surgery with cardiopulmonary bypass is associated with an increase in serum/plasma levels of all the studied injury markers, without signs of blood-brain barrier injury. The biomarkers differ markedly in their levels of release and time course. Further investigations are required to study associations between perioperative release of biomarkers, postoperative cognitive function and clinical outcome.

Indexed as

Brain InjuriesCardiac Surgical ProceduresBiomarkersCardiopulmonary BypassHemolysisHumansPhosphopyruvate HydrataseS100 Calcium Binding Protein beta SubunitBiomarkersPhosphopyruvate HydrataseS100 Calcium Binding Protein beta Subunit

Identifiers

PMID35118644
PMCPMC9302991

What OpenQuestion holds

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LicenceCC BY
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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.