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Brief Summary

GUIDELINE TITLE

Acute stroke management. Brain imaging. In: Canadian best practice recommendations for stroke care: 2006.

BIBLIOGRAPHIC SOURCE(S)

  • Acute stroke management. Brain imaging. In: Canadian best practice recommendations for stroke care: 2006. Ottawa (ON): Canadian Stroke Network, Heart & Stroke Foundation of Canada; 2006. p. 46-8.

GUIDELINE STATUS

This is the current release of the guideline.

The Canadian Best Practice Recommendations for Stroke Care 2006 will be updated every two years to remain current and incorporate new research findings.

BRIEF SUMMARY CONTENT

 
RECOMMENDATIONS
 EVIDENCE SUPPORTING THE RECOMMENDATIONS
 IDENTIFYING INFORMATION AND AVAILABILITY
 DISCLAIMER

 Go to the Complete Summary

RECOMMENDATIONS

MAJOR RECOMMENDATIONS

Definitions of the levels of evidence (A-D; I-IV; R) are provided at the end of the "Major Recommendations" field.

Note from the Canadian Stroke Network/Heart & Stroke Foundation of Canada and the National Guideline Clearinghouse (NGC): The Canadian Best Practice Recommendations for Stroke Care: 2006 guideline has been divided into individual summaries. In addition to the current summary, the following are available:

Best Practice Recommendation

All patients with suspected acute stroke should undergo brain imaging immediately. In most instances, the modality of choice is a non-contrast computer-assisted tomographic (CT) scan. If magnetic resonance imaging (MRI) is performed, the scan should include diffusion-weighted sequences to detect ischemia, and gradient echo and fluid-attenuated inversion recovery (FLAIR) sequences for hemorrhage. (Evidence Level B)

Rationale

Clinicians disagree on the clinical diagnosis of stroke (versus not stroke) in about 20% of patients. It is impossible to differentiate infarct from hemorrhage on clinical grounds. Brain imaging is required to guide management, including the selection of acute, time-sensitive interventions. In a decision-analysis model, a policy of 'scan all immediately' was more cost-effective than 'scan all within 48 hours' or 'scan patients on anticoagulants or in a life-threatening condition immediately and the rest within 14 days.'

Definitions:

Levels of Evidence

Several rating systems are used by guideline developers to evaluate the strength of the evidence for their recommendations. These systems vary in the nomenclature used (alpha versus numeric), but there is usually reasonable equivalence in the definitions across the levels of evidence. Each recommendation in the original guideline document provides the levels of evidence for the recommendation as well as the reference for the Primary Guideline(s) that were adapted or contributed most to the wording of the recommendation.

Level of Evidence* Definition
A I At least one randomized controlled trial (RCT); or, meta-analysis of RCTs
B II Well designed controlled trial without randomization; or, well designed cohort or case-control analytic study; or, multiple time series, dramatic results of uncontrolled experiment
C III At least one well designed, non-experimental descriptive study (e.g., comparative studies, correlation studies, case studies); or, expert committee reports, opinions and/or experience of respected authorities
D IV Expert committee reports, opinions and/or experience of respected authorities. This grading indicates that directly applicable clinical studies of good quality are absent.
R R Recommended good practice based on the clinical experience of the Guideline Development Group

*Refer to Appendix One in the original guideline document for a detailed table defining the evidence rating system used by each primary guideline referenced in this document.

CLINICAL ALGORITHM(S)

None provided

EVIDENCE SUPPORTING THE RECOMMENDATIONS

TYPE OF EVIDENCE SUPPORTING THE RECOMMENDATIONS

The type of evidence is specifically stated for each recommendation.

This document is the result of an extensive review of national and international evidence-based stroke best practice recommendations and guidelines.

IDENTIFYING INFORMATION AND AVAILABILITY

BIBLIOGRAPHIC SOURCE(S)

  • Acute stroke management. Brain imaging. In: Canadian best practice recommendations for stroke care: 2006. Ottawa (ON): Canadian Stroke Network, Heart & Stroke Foundation of Canada; 2006. p. 46-8.

ADAPTATION

Not applicable: The guideline was not adapted from another source.

DATE RELEASED

2006

GUIDELINE DEVELOPER(S)

Canadian Stroke Network - Disease Specific Society
Heart and Stroke Foundation of Canada - Disease Specific Society

SOURCE(S) OF FUNDING

Government Funding – National Centres of Excellence Program

GUIDELINE COMMITTEE

Canadian Stroke Strategy Best Practices and Standards Working Group

COMPOSITION OF GROUP THAT AUTHORED THE GUIDELINE

Working Group Members: Dr. Stephen Phillips (Co-Chair), Director Acute Stroke Service, Queen Elizabeth II Health Sciences Centre, Nova Scotia; Ms. Alison McDonald (Co-Chair), Physiotherapist, Nova Scotia Rehabilitation Centre, Capital Health, Nova Scotia; Ms. Lisa Ashley, Senior Advisor, Public Health Agency of Canada; Dr. Nigel Ashworth, Director of Physical Medicine and Rehabilitation, Glenrose Rehabilitation Hospital, Alberta; Dr. Mark Bayley, Physiatrist, Associate, Medicine Toronto Rehabilitation Institute, Ontario; Dr. Alan Bell, Family Practitioner, College of Family Physicians of Canada; Dr. Lucie Brosseau, Associate Professor, Rehabilitation Sciences, University of Ottawa, Ontario; Ms. Nancy Cooper, Director of Policy and Professional Development, Ontario Long Term Care Association; Ms. Bev Culham, Project Manager, Alberta Provincial Stroke Strategy, Alberta; Dr. Ian Graham, Vice President, Knowledge Translation Canadian Institutes for Health Research (CIHR); Dr. Gordon Gubitz, Neurologist Acute Stroke Unit & Outpatient Neurovascular Clinic, Queen Elizabeth II Health Sciences Centre, Nova Scotia; Ms. Valerie MacGillivary, Speech Language Pathologist, British Columbia; Ms. Janel Nadeau, Patient Advocate, Stroke Recovery Association, Alberta; Ms. Louise Nichol, Community Team Manager, Home Care Program, Community Stroke Care Service, Manitoba; Ms. Christina O'Callaghan, Regional Stroke Program Manager, Ontario; Ms. Elizabeth Swain, Physiotherapist, British Columbia; Dr. John Witt, Director Acute Stroke Care, Department of Emergency Medicine, Royal University Hospital, Saskatchewan; Ms. Rika VanderLaan, Consultant, Heart and Stroke Foundation of Ontario; Ms. Mary Elizabeth Harriman, Associate Executive Director, Heart and Stroke Foundation of Canada; Ms. Katie Lafferty, Executive Director, Canadian Stroke Network; Ms. Debra Lynkowski, Director, Canadian Stroke Strategy; Dr. Patrice Lindsay, Co-Chair CSS Information & Evaluation Working Group, Canadian Stroke Strategy; Ms. Laurie Cameron, Program Coordinator and Executive Assistant, Canadian Stroke Strategy; Ms. Gail Williams, Consultant, Canadian Stroke Strategy

FINANCIAL DISCLOSURES/CONFLICTS OF INTEREST

Not stated

ENDORSER(S)

World Stroke Organization - International Agency

GUIDELINE STATUS

This is the current release of the guideline.

The Canadian Best Practice Recommendations for Stroke Care 2006 will be updated every two years to remain current and incorporate new research findings.

GUIDELINE AVAILABILITY

Electronic copies: Available from the Canadian Stroke Strategy Web site.

Print copies: Available from The Canadian Stroke Strategy, 451 Smyth Road, Room 3105, Ottawa, Ontario K1H 8M5.

AVAILABILITY OF COMPANION DOCUMENTS

The following are available:

Print copies: Available from The Canadian Stroke Strategy, 451 Smyth Road, Room 3105, Ottawa, Ontario; K1H 8M5.

Additionally, suggested performance measures are available in the original guideline document.

PATIENT RESOURCES

A variety of patient information resources, including a list of stroke warning signs, is available from the Heart & Stroke Foundation of Canada Web site.

Please note: This patient information is intended to provide health professionals with information to share with their patients to help them better understand their health and their diagnosed disorders. By providing access to this patient information, it is not the intention of NGC to provide specific medical advice for particular patients. Rather we urge patients and their representatives to review this material and then to consult with a licensed health professional for evaluation of treatment options suitable for them as well as for diagnosis and answers to their personal medical questions. This patient information has been derived and prepared from a guideline for health care professionals included on NGC by the authors or publishers of that original guideline. The patient information is not reviewed by NGC to establish whether or not it accurately reflects the original guideline's content.

NGC STATUS

This NGC summary was completed by ECRI Institute on July 14, 2008. The information was verified by the guideline developer on August 27, 2008.

COPYRIGHT STATEMENT

This NGC summary is based on the original guideline, which is subject to the guideline developer's copyright restrictions.

DISCLAIMER

NGC DISCLAIMER

The National Guideline Clearinghouse™ (NGC) does not develop, produce, approve, or endorse the guidelines represented on this site.

All guidelines summarized by NGC and hosted on our site are produced under the auspices of medical specialty societies, relevant professional associations, public or private organizations, other government agencies, health care organizations or plans, and similar entities.

Guidelines represented on the NGC Web site are submitted by guideline developers, and are screened solely to determine that they meet the NGC Inclusion Criteria which may be found at http://www.guideline.gov/about/inclusion.aspx .

NGC, AHRQ, and its contractor ECRI Institute make no warranties concerning the content or clinical efficacy or effectiveness of the clinical practice guidelines and related materials represented on this site. Moreover, the views and opinions of developers or authors of guidelines represented on this site do not necessarily state or reflect those of NGC, AHRQ, or its contractor ECRI Institute, and inclusion or hosting of guidelines in NGC may not be used for advertising or commercial endorsement purposes.

Readers with questions regarding guideline content are directed to contact the guideline developer.


 

 

   
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