Evidence map›Paper›PMID 35794390›Full record

SynthesisNeuroradiology2022

The incidence of cerebral arterial vasospasm following aneurysmal subarachnoid haemorrhage: a systematic review and meta-analysis.

Lachlan Donaldson, Ashleigh Edington, Ruan Vlok, Inez Astono, Tom Iredale, Oliver Flower, Alice Ma, Keryn Davidson, Anthony Delaney

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Neuroradiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 15% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

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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

9 authors at 2 institutions in 2 countries.

Lachlan DonaldsonMalcolm Fisher Department of Intensive Care Medicine, Royal North Shore Hospital, Reserve Rd, St. Leonards, Sydney, NSW, 2065, Australia. LDonaldson@georgeinstitute.org.au.ORCID http://orcid.org/0000-0002-3530-785X
Ashleigh EdingtonNorthern Clinical School, Sydney Medical School, University of Sydney, Sydney, Australia.
Ruan VlokMalcolm Fisher Department of Intensive Care Medicine, Royal North Shore Hospital, Reserve Rd, St. Leonards, Sydney, NSW, 2065, Australia.ORCID http://orcid.org/0000-0002-6729-7772
Inez AstonoMalcolm Fisher Department of Intensive Care Medicine, Royal North Shore Hospital, Reserve Rd, St. Leonards, Sydney, NSW, 2065, Australia.
Tom IredaleMalcolm Fisher Department of Intensive Care Medicine, Royal North Shore Hospital, Reserve Rd, St. Leonards, Sydney, NSW, 2065, Australia.
Oliver FlowerMalcolm Fisher Department of Intensive Care Medicine, Royal North Shore Hospital, Reserve Rd, St. Leonards, Sydney, NSW, 2065, Australia.ORCID http://orcid.org/0000-0002-0655-0826
Alice MaDepartment of Neurosurgery, Royal North Shore Hospital, Sydney, Australia.
Keryn DavidsonDepartment of Neurosurgery, Royal North Shore Hospital, Sydney, Australia.
Anthony DelaneyMalcolm Fisher Department of Intensive Care Medicine, Royal North Shore Hospital, Reserve Rd, St. Leonards, Sydney, NSW, 2065, Australia.ORCID http://orcid.org/0000-0002-1015-7146
Royal North Shore Hospital · AUThe University of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo describe a pooled estimated incidence of cerebral arterial vasospasm (aVSP) following aneurysmal subarachnoid haemorrhage (aSAH) and to describe sources of variation in the reported incidence.

methodsWe performed a systematic review and meta-analysis of randomised clinical trials (RCTs) and cohort studies. The primary outcome was the proportion of study participants diagnosed with aVSP. We assessed for heterogeneity based on mode of imaging, indication for imaging, study design and clinical characteristics at a study level.

resultsWe identified 120 studies, including 19,171 participants. More than 40 different criteria were used to diagnose aVSP. The pooled estimate of the proportion of patients diagnosed with aVSP was 0.42 (95% CI 0.39 to 0.46, I

conclusionThe incidence of cerebral arterial vasospasm following aSAH varies widely from 9 to 93% of study participants. Heterogeneity in the reported incidence may be due to variation in the criteria used to diagnose aVSP. A standard set of diagnostic criteria is necessary to resolve the role that aVSP plays in delayed neurological deterioration following aSAH. PROSPERO REGISTRATION: CRD42020191895.

Indexed as

Subarachnoid HemorrhageVasospasm, IntracranialHumansIncidenceDelayed cerebral ischaemiaDelayed neurological deteriorationIntracranial vasospasmSubarachnoid haemorrhage

Identifiers

PMID35794390
PMCPMC9643195
OpenAlexW4284883388

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.