Evidence map›Paper›PMID 26965242›Full record

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

Delay of late-venous phase cortical vein filling in acute ischemic stroke patients: Associations with collateral status.

Sonu Bhaskar, Andrew Bivard, Mark Parsons, Michael Nilsson, John R Attia, Peter Stanwell, Christopher Levi

Open access · bronzeAbstract read
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 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

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  17. Baseline collateral status and infarct topography in post-ischaemic perilesional hyperperfusion: An arterial spin labelling study.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
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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

7 authors at 2 institutions in 2 countries.

Sonu Bhaskar1 Department of Neurology, John Hunter Hospital, University of Newcastle, NSW, Australia.
Andrew Bivard1 Department of Neurology, John Hunter Hospital, University of Newcastle, NSW, Australia.
Mark Parsons1 Department of Neurology, John Hunter Hospital, University of Newcastle, NSW, Australia.
Michael Nilsson2 Centre for Translational Neuroscience and Mental Health, School of Health Sciences and Hunter Medical Research Institute, University of Newcastle, NSW, Australia.
John R Attia4 Centre for Clinical Epidemiology & Biostatistics, Hunter Medical Research Institute, University of Newcastle, NSW, Australia.
Peter Stanwell2 Centre for Translational Neuroscience and Mental Health, School of Health Sciences and Hunter Medical Research Institute, University of Newcastle, NSW, Australia.
Christopher Levi1 Department of Neurology, John Hunter Hospital, University of Newcastle, NSW, Australia.
Hunter Medical Research Institute · AUJohn Hunter Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Evaluation of the venous system may be useful in stroke prognostication and patient selection for acute intervention strategies. We report a novel phenomenon, delayed-late venous phase cortical vein filling, observed on dynamic computed tomography angiography obtained using multidetector computed tomography scanner, in acute ischemic stroke patients. The aim of this study was to examine the frequency of delayed-late venous phase cortical vein filling and assess its association to baseline collateral status. Dynamic computed tomography angiography images of acute ischemic stroke patients, being assessed for reperfusion therapy, were prospectively studied. Delayed-late venous phase cortical vein filling was defined by late venous phase opacification of cortical veins despite contrast clearance from contralateral cortical veins on dynamic computed tomography angiography. Time to peak of maximum arterial enhancement was recorded. A total of 117 patients (mean age = 70.6 ± 13.3 years; males = 48%) with hemispheric ischemic stroke who underwent acute dynamic computed tomography angiography were included in the study. Overall, 56 (48%) demonstrated delayed-late venous phase cortical vein filling. Poor collateralization (OR = 13.50; 95% CI = (4.2, 43); p ≤ 0.0001) and longer time to peak of maximum arterial enhancement (OR = 3.2; 95% CI = (1.96, 5.3); p  ≤ 0.0001) were positively associated with delayed-late venous phase cortical vein filling. Delayed-late venous phase cortical vein filling was independently associated with poor baseline collateral status (75% vs. 15%, p ≤ 0.0001; OR = 14.38; 95% CI = (4.33, 47.8); p ≤ 0.0001). Delayed-late venous phase cortical vein filling is frequently seen in patients with acute ischemic stroke and is associated with poor baseline collateralization.

Indexed as

Collateral CirculationAgedAged, 80 and overBrain IschemiaCerebrovascular CirculationComputed Tomography AngiographyFemaleHumansMaleMiddle AgedProspective StudiesStrokeVeinsangiographycollateral flowCTAStrokevenous flow

Identifiers

PMID26965242
PMCPMC5381457
OpenAlexW2295150193

What OpenQuestion holds

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Registered trials

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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 OpenQuestion graph.