Evidence map›Paper›PMID 25887441›Full record

ArticleCritical care (London, England)2015

Early brain injury after aneurysmal subarachnoid hemorrhage: a multimodal neuromonitoring study.

Raimund Helbok, Alois Josef Schiefecker, Ronny Beer, Anelia Dietmann, Ana Patrícia Antunes, Florian Sohm, Marlene Fischer, Werner Oskar Hackl, Paul Rhomberg, Peter Lackner and 4 more

Open access · goldAbstract read
In one paragraph

Article in Critical care (London, England), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
8.9field-weighted citation impact, top 2% 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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 116 citations in OpenAlex.

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  20. Value of multi-channel somatosensory evoked potentials recording in patients undergoing scoliosis correction surgery.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2023
    Article

6 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

14 authors at 3 institutions in 2 countries.

Raimund HelbokNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. raimund.helbok@uki.at.
Alois Josef SchiefeckerNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. alois.schiefecker@uki.at.
Ronny BeerNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. ronny.beer@i-med.ac.at.
Anelia DietmannNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. anelia.dietman@i-med.ac.at.
Ana Patrícia AntunesNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. anappantunes@gmail.com.
Florian SohmDepartment of Neurosurgery, Innsbruck Medical University, Anichstreet 35, 6020, Innsbruck, Austria. florian.sohm@i-med.ac.at.
Marlene FischerNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. mar.fischer@uke.de.
Werner Oskar HacklInstitute of Biomedical Informatics, UMIT-University for Health Sciences, Medical Informatics and Technology, Eduard Wallnöfer-Zentrum I, 6060, Hall in Tirol, Austria. werner.hackl@umit.at.
Paul RhombergDepartment of Radiology, Innsbruck Medical University, Anichstreet 35, 6020, Innsbruck, Austria. paul.rhomberg@tilak.at.
Peter LacknerNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. peter.lackner@i-med.ac.at.
Bettina PfauslerNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. b.pfausler@i-med.ac.at.
Claudius ThoméDepartment of Neurosurgery, Innsbruck Medical University, Anichstreet 35, 6020, Innsbruck, Austria. claudius.thome@uki.at.
Christian HumpelDepartment of Psychiatry and Psychotherapy, Medical University Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. christian.humpel@i-med.ac.at.
Erich SchmutzhardNeurological Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Anichstreet 35, 6020, Innsbruck, Austria. erich.schmutzhard@i-med.ac.at.
Universität Innsbruck · ATInnsbruck Medical University · ATUMIT - Private Universität für Gesundheitswissenschaften, Medizinische Informatik und Technik · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThere is a substantial amount of evidence from animal models that early brain injury (EBI) may play an important role for secondary brain injury after aneurysmal subarachnoid hemorrhage (aSAH). Cerebral microdialysis (CMD) allows online measurement of brain metabolites, including the pro-inflammatory cytokine interleukin-6 (IL-6) and matrix metalloproteinase-9 (MMP-9), which is indicative for disruption of the blood-brain barrier.

methodsTwenty-six consecutive poor-grade aSAH patients with multimodal neuromonitoring were analyzed for brain hemodynamic and metabolic changes, including CMD-IL-6 and CMD-MMP-9 levels. Statistical analysis was performed by using a generalized estimating equation with an autoregressive function.

resultsThe baseline cerebral metabolic profile revealed brain metabolic distress and an excitatory response which improved over the following 5 days (P <0.001). Brain tissue hypoxia (brain tissue oxygen tension of less than 20 mm Hg) was common (more than 60% of patients) in the first 24 hours of neuromonitoring and improved thereafter (P <0.05). Baseline CMD-IL-6 and CMD-MMP-9 levels were elevated in all patients (median = 4,059 pg/mL, interquartile range (IQR) = 1,316 to 12,456 pg/mL and median = 851 pg/mL, IQR = 98 to 25,860 pg/mL) and significantly decreased over days (P <0.05). A higher pro-inflammatory response was associated with the development of delayed cerebral ischemia (P = 0.04), whereas admission disease severity and early brain tissue hypoxia were associated with higher CMD-MMP-9 levels (P <0.03). Brain metabolic distress and increased IL-6 levels were associated with poor functional outcome (modified Rankin Scale of more than 3, P ≤0.01). All models were adjusted for probe location, aneurysm securing procedure, and disease severity as appropriate.

conclusionsMultimodal neuromonitoring techniques allow insight into pathophysiologic changes in the early phase after aSAH. The results may be used as endpoints for future interventions targeting EBI in poor-grade aSAH patients.

Indexed as

AgedBlood-Brain BarrierBrain IschemiaCritical IllnessFemaleHumansInterleukin-6MaleMatrix Metalloproteinase 9MicrodialysisMiddle AgedMonitoring, PhysiologicNeuroimagingOxygenSubarachnoid HemorrhageTreatment OutcomeInterleukin-6Matrix Metalloproteinase 9Oxygen

Identifiers

PMID25887441
PMCPMC4384312
OpenAlexW2131696600

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.