Evidence mapPaperPMID 41639540Full record

ArticleNeurocritical care2026

Glucose and Lactate Concentrations in Plasma, Cerebrospinal Fluid, and Brain Parenchyma Following Aneurysmal Subarachnoid Hemorrhage: A Cross-compartmental Correlation Study.

Niko Schmaling, Miriam M Moser, Lena Weyer, Robin Ristl, Walter Plöchl, Andrea Reinprecht, Johannes Herta, Karl Rössler, Arthur Hosmann

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Article in Neurocritical care, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Niko SchmalingDepartment of Neurosurgery, Medical University of Vienna, Währinger-Gürtel 18-20, 1090, Vienna, Austria.
Miriam M MoserDepartment of Neurosurgery, Medical University of Vienna, Währinger-Gürtel 18-20, 1090, Vienna, Austria.
Lena WeyerInstitute for Medical Statistics, Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria.
Robin RistlInstitute for Medical Statistics, Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria.
Walter PlöchlDepartment of Anesthesia, General Intensive Care Medicine and Pain Management, Medical University of Vienna, Vienna, Austria.
Andrea ReinprechtDepartment of Neurosurgery, Medical University of Vienna, Währinger-Gürtel 18-20, 1090, Vienna, Austria.
Johannes HertaDepartment of Neurosurgery, Medical University of Vienna, Währinger-Gürtel 18-20, 1090, Vienna, Austria.
Karl RösslerDepartment of Neurosurgery, Medical University of Vienna, Währinger-Gürtel 18-20, 1090, Vienna, Austria.
Arthur HosmannDepartment of Neurosurgery, Medical University of Vienna, Währinger-Gürtel 18-20, 1090, Vienna, Austria. arthur.hosmann@meduniwien.ac.at.ORCID http://orcid.org/0000-0001-7396-4239

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesPatients with aneurysmal subarachnoid hemorrhage (aSAH) are at high risk of secondary ischemia, and timely insight into cerebral metabolism may improve clinical management. Cerebral microdialysis offers continuous metabolic monitoring but is invasive, focal, and confined to specialized centers. Peripheral blood and cerebrospinal fluid (CSF) could provide less invasive, more accessible surrogates for assessing cerebral metabolic status. This study aimed to evaluate glucose and lactate dynamics across blood, CSF, and brain parenchyma in patients with severe aSAH. PATIENTS AND

methodsA total of 39 patients with aSAH undergoing multimodal neuromonitoring were retrospectively analyzed. Glucose and lactate levels from plasma, CSF, and cerebral microdialysis were matched within 90-min intervals relative to each microdialysis measurement. Associations were analyzed using linear mixed-effects models.

resultsPlasma (p < 0.001) and CSF (p < 0.001) glucose levels were significantly associated with cerebral glucose concentrations. Moderate correlations were observed between plasma-brain (r = 0.54) and plasma-CSF (r = 0.55), while CSF-brain correlation was weaker (r = 0.36). For lactate, significant associations were found between CSF and brain (p = 0.04; r = 0.24) and between plasma and CSF (p < 0.001; r = 0.33), but plasma-brain lactate showed no significant relationship. The plasma-brain glucose association weakened slightly over time (p = 0.008) and strengthened during episodes of low brain tissue oxygenation (pbtO

conclusionsIn severe aSAH, glucose and lactate levels in blood and CSF reflect cerebral values in a compartment- and metabolite-specific manner, but with high variability influenced by clinical conditions. These findings suggest that blood and CSF provide only limited information about cerebral metabolism, highlighting the complementary value of cerebral microdialysis for individualized, brain-targeted monitoring.

Indexed as

BrainGlucoseLactic AcidParenchymal TissueSubarachnoid HemorrhageAdultAgedFemaleHumansMaleMicrodialysisMiddle AgedNeurophysiological MonitoringRetrospective StudiesGlucoseLactic AcidCerebrospinal fluidGlucoseLactateMicrodialysisSubarachnoid hemorrhage

Identifiers

PMID41639540
PMCPMC13249765

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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 Socratic graph.