Evidence map›Paper›PMID 19786699›Full record

Trial reportNeurology2009

Good clinical outcome after ischemic stroke with successful revascularization is time-dependent.

P Khatri, T Abruzzo, S D Yeatts, C Nichols, J P Broderick, T A Tomsick, IMS I and II Investigators

Registry-linked trialAbstract readClinical Trial
In one paragraph

Trial report in Neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05403593 (Registry of Emergent Large VeSsel OCclUsion DuE to IntraCranial AtherosclerosiS), which is not on this map. Cited by 200 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
200citing papers in PubMed, 5 pooled it
–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.

NCT05403593 completednot on this mapstarted 2021, after this paper: background citation

Registry of Emergent Large VeSsel OCclUsion DuE to IntraCranial AtherosclerosiS

Typeobservational_patient_registrySponsorMedical University of South CarolinaRan2021 to 2024Enrolled600ConditionsIntracranial Stenosis, Large Vessel Occlusion, Mechanical ThrombectomyArmsNo Intervention
3 · Its place in the literature

Who cites it

200 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  10. Outcomes following sonothrombolysis in severe acute ischemic stroke: subgroup analysis of the CLOTBUST trial.International journal of stroke : official journal of the International Stroke Society · 2014
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  15. Laser speckle imaging allows real-time intraoperative blood flow assessment during neurosurgical procedures.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2013
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140 more citing papers are in PubMed but not listed here.

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.

P KhatriDepartment of Neurology, University of Cincinnati Academic Health Center, Cincinnati, OH 45267-0525, USA. pooja.khatri@uc.edu
T Abruzzo
S D Yeatts
C Nichols
J P Broderick
T A Tomsick
IMS I and II Investigators

Funding

Cerebrovascular Fellowship Training ProgramT32NS047996 · NINDS · UNIVERSITY OF CINCINNATI · PI Joseph Paul Broderick, Stacie Demel · 2006 to 2026
$3.7M
INTERVENTIONAL MANAGEMENT OF STROKE (IMS) STUDYR01NS039160 · NINDS · UNIVERSITY OF CINCINNATI · PI BRODERICK, JOSEPH PAUL · 2000 to 2002
$2.2M
IN VIVO EVALUATION OF STROKE ULTRASOUND CATHETERR44HL064434 · NHLBI · EKOS CORPORATION · PI HANSMANN, DOUGLAS R. · 2000 to 2004
$849k
The Significance of Intracranial Hemorrhage after Revascularization TherapyK23NS059843 · NINDS · UNIVERSITY OF CINCINNATI · PI KHATRI, POOJA · 2007 to 2011
$778k
NHLBI NIH HHS R44 HL064434NHLBI NIH HHS R44HL64434NINDS NIH HHS K23 NS059843NINDS NIH HHS R01 NS039160NINDS NIH HHS R01NS39160NINDS NIH HHS T32 NS047996
6 · The paper itself

Abstract

backgroundTrials of IV recombinant tissue plasminogen activator (rt-PA) have demonstrated that longer times from ischemic stroke symptom onset to initiation of treatment are associated with progressively lower likelihoods of clinical benefit, and likely no benefit beyond 4.5 hours. How the timing of IV rt-PA initiation relates to timing of restoration of blood flow has been unclear. An understanding of the relationship between timing of angiographic reperfusion and clinical outcome is needed to establish time parameters for intraarterial (IA) therapies.

methodsThe Interventional Management of Stroke pilot trials tested combined IV/IA therapy for moderate-to-severe ischemic strokes within 3 hours from symptom onset. To isolate the effect of time to angiographic reperfusion on clinical outcome, we analyzed only middle cerebral artery and distal internal carotid artery occlusions with successful reperfusion (Thrombolysis in Cerebral Infarction 2-3) during the interventional procedure (<7 hours). Time to angiographic reperfusion was defined as time from stroke onset to procedure termination. Good clinical outcome was defined as modified Rankin Score 0-2 at 3 months.

resultsAmong the 54 cases, only time to angiographic reperfusion and age independently predicted good clinical outcome after angiographic reperfusion. The probability of good clinical outcome decreased as time to angiographic reperfusion increased (unadjusted p = 0.02, adjusted p = 0.01) and approached that of cases without angiographic reperfusion within 7 hours.

conclusionsWe provide evidence that good clinical outcome following angiographically successful reperfusion is significantly time-dependent. At later times, angiographic reperfusion may be associated with a poor risk-benefit ratio in unselected patients.

Indexed as

AdultAgedAged, 80 and overBrain IschemiaCarotid StenosisCerebral AngiographyCerebral RevascularizationFemaleFibrinolytic AgentsHumansInfarction, Middle Cerebral ArteryInjections, Intra-ArterialInjections, IntravenousMaleMiddle AgedPilot ProjectsFibrinolytic AgentsTissue Plasminogen Activator

Identifiers

PMID19786699
PMCPMC2754326

What OpenQuestion holds

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Registered trials

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.