Evidence map›Paper›PMID 34462881›Full record

Trial reportNeurocritical care2021

Association Between Spreading Depolarization and Delayed Cerebral Ischemia After Subarachnoid Hemorrhage: Post Hoc Analysis of a Randomized Trial of the Effect of Cilostazol on Delayed Cerebral Ischemia.

Akiko Kawano, Kazutaka Sugimoto, Sadahiro Nomura, Takao Inoue, Reo Kawano, Fumiaki Oka, Hirokazu Sadahiro, Hideyuki Ishihara, Michiyasu Suzuki

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Neurocritical care, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

10 citing papers in PubMed, 13 citations in OpenAlex.

  1. Trial
  2. Observational
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. 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

9 authors at 2 institutions in 1 country.

Akiko KawanoDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Kazutaka SugimotoDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan. sugi1010@yamaguchi-u.ac.jp.ORCID http://orcid.org/0000-0002-7666-2620
Sadahiro NomuraDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Takao InoueDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Reo KawanoCenter for Integrated Medical Research, Hiroshima University Hospital, Hiroshima, Japan.
Fumiaki OkaDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Hirokazu SadahiroDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Hideyuki IshiharaDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Michiyasu SuzukiDepartment of Neurosurgery, Yamaguchi University School of Medicine, Yamaguchi, Japan.
Yamaguchi University · JPHiroshima University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDelayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (SAH) remains an important problem with a complex pathophysiology. We used data from a single-center randomized trial to assess the effect of a phosphodiesterase inhibitor, cilostazol, in patients with aneurysmal SAH to explore the relationships of DCI with vasospasm, spreading depolarization (SD) and microcirculatory disturbance.

methodsA post hoc analysis of a single-center, prospective, randomized trial of the effect of cilostazol on DCI and SD after aneurysmal SAH was performed. From all randomized cohorts, patients who underwent both SD monitoring and digital subtraction angiography (DSA) on day 9 ± 2 from onset were included. Cerebral circulation time (CCT), which was divided into proximal CCT and peripheral CCT (as a measure of microcirculatory disturbance), was obtained from DSA. Logistic regression was conducted to determine factors associated with DCI.

resultsComplete data were available for 28 of 50 patients. Of the 28 patients, 8 (28.5%) had DCI during the study period. Multivariate analysis indicated a strong association between the number of SDs on the day DSA was performed (i.e., a delayed time point after SAH onset) and DCI (odds ratio 2.064, 95% confidence interval 1.045-4.075, P = 0.037, area under the curve 0.836), whereas the degree of angiographic vasospasm and peripheral CCT were not significant factors for DCI.

conclusionsThere is a strong association between SD and DCI. Our results suggest that SD is an important therapeutic target and a potentially useful biomarker for DCI.

Indexed as

Brain IschemiaSubarachnoid HemorrhageVasospasm, IntracranialCilostazolHumansMicrocirculationProspective StudiesCilostazolCortical spreading depressionSubarachnoid hemorrhage

Identifiers

PMID34462881
OpenAlexW3196663327

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.