Evidence map›Paper›PMID 27025768›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2017

Oxygen availability and spreading depolarizations provide complementary prognostic information in neuromonitoring of aneurysmal subarachnoid hemorrhage patients.

Maren Kl Winkler, Nora Dengler, Nils Hecht, Jed A Hartings, Eun J Kang, Sebastian Major, Peter Martus, Peter Vajkoczy, Johannes Woitzik, Jens P Dreier

Abstract readMulticenter Study
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–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

38 citing papers in PubMed.

  1. Trial
  2. Long-acting statin for aneurysmal subarachnoid hemorrhage: A randomized, double-blind, placebo-controlled trial.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2018
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  9. Isoflurane lowers the cerebral metabolic rate of oxygen and prevents hypoxia during cortical spreading depolarizationJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 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

10 authors.

Maren Kl Winkler1 Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany.
Nora Dengler2 Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany.
Nils Hecht2 Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany.
Jed A Hartings3 Department of Neurosurgery, University of Cincinnati, Cincinnati, OH, USA.
Eun J Kang1 Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany.
Sebastian Major1 Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany.
Peter Martus6 Institute for Clinical Epidemiology and Applied Biometry, University of Tübingen, Tübingen, Germany.
Peter Vajkoczy2 Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany.
Johannes Woitzik2 Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany.
Jens P Dreier1 Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Multimodal neuromonitoring in neurocritical care increasingly includes electrocorticography to measure epileptic events and spreading depolarizations. Spreading depolarization causes spreading depression of activity (=isoelectricity) in electrically active tissue. If the depression is long-lasting, further spreading depolarizations occur in still isoelectric tissue where no activity can be suppressed. Such spreading depolarizations are termed isoelectric and are assumed to indicate energy compromise. However, experimental and clinical recordings suggest that long-lasting spreading depolarization-induced depression and isoelectric spreading depolarizations are often recorded outside of the actual ischemic zones, allowing the remote diagnosis of delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage. Here, we analyzed simultaneous electrocorticography and tissue partial pressure of oxygen recording in 33 aneurysmal subarachnoid hemorrhage patients. Multiple regression showed that both peak total depression duration per recording day and mean baseline tissue partial pressure of oxygen were independent predictors of outcome. Moreover, tissue partial pressure of oxygen preceding spreading depolarization was similar and differences in tissue partial pressure of oxygen responses to spreading depolarization were only subtle between isoelectric spreading depolarizations and spreading depressions. This further supports that, similar to clustering of spreading depolarizations, long spreading depolarization-induced periods of isoelectricity are useful to detect energy compromise remotely, which is valuable because the exact location of future developing pathology is unknown at the time when the neurosurgeon implants recording devices.

Indexed as

Blood Gas Monitoring, TranscutaneousCerebrovascular CirculationCortical Spreading DepressionCritical CareElectrocorticographyFemaleHumansMaleMiddle AgedNeurophysiological MonitoringOxygenPartial PressurePrognosisProspective StudiesSubarachnoid HemorrhageOxygenoxygen availabilitySpreading depolarizationspreading depressionstrokesubarachnoid hemorrhagevasospasm

Identifiers

PMID27025768
PMCPMC5435278

What OpenQuestion holds

Textmetadata
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.