Evidence map›Paper›PMID 25782447›Full record

ArticleNeurocritical care2015

Dynamic Autoregulatory Response After Aneurysmal Subarachnoid Hemorrhage and Its Relation to Angiographic Vasospasm and Clinical Outcome.

Johann Fontana, Julius Moratin, Gregory Ehrlich, Johann Scharf, Christel Weiß, Kirsten Schmieder, Martin Barth

Abstract read
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In one paragraph

Article in Neurocritical care, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 7% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Calcium Channel Blockers in Acute Care: The Links and Missing Links Between Hemodynamic Effects and Outcome Evidence.American journal of cardiovascular drugs : drugs, devices, and other interventions · 2021
    Pooled it
  3. Brain-kidney crosstalk in subarachnoid hemorrhage patients.Journal of critical care medicine (Universitatea de Medicina si Farmacie din Targu-Mures) · 2026
    Article
  4. Article
  5. Review of studies on dynamic cerebral autoregulation in the acute phase of stroke and the relationship with clinical outcome.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Review
  6. Review
  7. Review
  8. Observational
  9. Article
  10. Cerebral Autoregulation in Stroke.Current atherosclerosis reports · 2018
    Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

7 authors at 3 institutions in 1 country.

Johann FontanaDepartment of Neurosurgery, Knappschafts-Krankenhaus Bochum, Ruhr-University Bochum, In der Schornau 23-25, 44892, Bochum, Germany. johann.fontana@kk-bochum.de.
Julius MoratinDepartment of Neurosurgery, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany.
Gregory EhrlichDepartment of Neurosurgery, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany.
Johann ScharfDepartment of Neuroradiology, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany.
Christel WeißDepartment of Medical Statistics, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany.
Kirsten SchmiederDepartment of Neurosurgery, Knappschafts-Krankenhaus Bochum, Ruhr-University Bochum, In der Schornau 23-25, 44892, Bochum, Germany.
Martin BarthDepartment of Neurosurgery, Knappschafts-Krankenhaus Bochum, Ruhr-University Bochum, In der Schornau 23-25, 44892, Bochum, Germany. martin.barth@kk-bochum.de.
Ruhr University Bochum · DEUniversity Hospital Heidelberg · DEHeidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundImpaired cerebral autoregulation (CA) is increasingly recognized to contribute to sequelae after aneurysmal subarachnoid hemorrhage (SAH). The current study characterizes the course of the dynamic autoregulation index (ARI) during the first 8 days after SAH and its coherence with angiographic vasospasm (VS) and clinical outcome.

methodsFifty-one patients with SAH were prospectively included within 48 h after the ictus. The ARI was determined daily for each hemisphere with the thigh cuff test. The degree of cerebral VS was evaluated based on a baseline digital subtraction angiography (DSA) after the ictus and a follow-up DSA on day 8. The clinical outcome was determined by the Modified Rankin Scale (mRS), the Glasgow Outcome Scale Extended (GOSE), and the National Institute of Health Stroke Scale (NIHSS) at discharge from the intensive care unit.

resultsImpaired CA significantly correlated with unfavorable clinical outcome scores (mRS, p = 0.0021; GOSE, p = 0.0027; NIHSS, p = 0.0091). ARI-values of patients with a favorable clinical outcome (mRS 0-3) showed a significant improvement during the first 8 days (+0.1964/day; p = 0.0148) compared to a significant decrease of ARI-values in patients with an unfavorable clinical outcome (-0.2976/day; p = 0.0182). The degree of CA impairment significantly correlated with the severity of VS in the middle cerebral artery (p = 0.0184).

conclusionsEarly deterioration of CA significantly correlates with unfavorable clinical outcome and severity of angiographic vasospasm. Dynamic CA measurements might represent an important tool in stratifying therapy guidelines in patients after SAH.

Indexed as

Outcome Assessment, Health CareAdultAgedAngiography, Digital SubtractionCerebral AngiographyFemaleHomeostasisHumansIntracranial AneurysmMaleMiddle AgedMiddle Cerebral ArterySubarachnoid HemorrhageVasospasm, IntracranialCerebral autoregulationCerebral vasospasmDynamic autoregulation indexSubarachnoid hemorrhage

Identifiers

PMID25782447
OpenAlexW2021201013

What OpenQuestion holds

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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.