The International Agenda for Stroke - who.int · The International Agenda for Stroke Marc Fisher...
Transcript of The International Agenda for Stroke - who.int · The International Agenda for Stroke Marc Fisher...
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The International Agenda for Stroke
Marc Fisher MD, University of MassachusettsEditor-in-Chief, Stroke, AHA/ASA
Bo Norrving MD, PhD, Lund UniversityPresident World Stroke Organization
1st Global Conference on HealthyLifestyles and NoncommunicableDiseases ControlMoscow, 28-29 April, 2011
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Ischemic and Hemorrhagic Stroke
Ischemic strokes are the most common and arise from blood vessel narrowing and platelet adhesion as with CAD, leading to blood clot formation and brain injury.
Hemorrhagic strokes are more common in some populations especially in Asia and results from the rupture of a blood vessel or aneurysm. The outlook is much worse and almost 50% will die.
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Stroke Facts in Developed Countries
Stroke is
- cause no 1 of disability- cause no 2 of dementia- cause no 3 of death- major cause of
epilepsyfallsdepression
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Incidence and prevalence of stroke
Incidence PrevalenceWorld 9.0 million 30.7 million
Africa 0.7 1.6Americas 0.9 4.8EasternMediterranean 0.4 1.1Europe 2.0 9.6South-East Asia 1.8 4.5Western Pacific 3.3 9.1
12.6 million have moderate-severe disability,8.9/12.6 million in low-mid income countries
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Source: 2004 WHO World Atlas on CVD/Stroke
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Time trends inischemic stroke 1970 topresent:
High-incomecountries:decrease 42 %
Low-middle incomecountries:more than doubled
Feigin et al. Lancet Neurology, 2009
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COSTS OF STROKE IN THE US:
2007 AHA ESTIMATES
- Direct and indirect costs = $40 billion
- Mean lifetime cost = $140,048
- Inpatient hospital costs for an acute stroke event account for 70% of first-year post stroke costs.
- Estimates of total stroke cost between 2005-2050, in US dollars is projected to be $1.52 trillion for non-Hispanic whites, $313 billion for Hispanics, and $379 billion for Blacks
- Loss earnings is expected to be the highest cost contributor in each race/ethnic group.
©2011 American Heart Association, Inc. Circulation. 2011;123:e18-e209
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Prevention of stroke
Commonality of risk factors for…
… stroke… coronary heart disease… peripheral vascular disease… many types of dementia… many types of cancer… respiratory tract disorders… diabetes…
Non-communicable diseases (NCD)
Need tojoin hands
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Stroke risk factors
Medical Conditions• Hypertension
• Atrial fibrillation
• Hyperlipidemia
• Diabetes mellitus
• Carotid stenosis
• Prior TIA or stroke
• Elevated homocysteine
Behaviors• Cigarette smoking
• Alcohol abuse
• Physical inactivity
Non-modifiableAge, Gender, Race, Heredity
Modifiable
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account for 2/3 of all first-ever strokes
For stroke the top 5 risk factors are
• hypertension• atrial fibrillation• diabetes• physical inactivity• smoking
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Number of stroke per 100 000
0
20
40
60
80
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Lawes et al. Lancet 2008;371:1513-18
Global burden of blood-pressure related disease
About 54 % of allstrokes attributable tohigh blood pressure
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Which factors drive stroke mortality rates? Only the risk factors?
p-value
Mean systolic blood pressure 0.028Tobacco use 0.041Weight 0.017
National income <0.0001
Links to strengths of health systems and primary care,and to poverty
Johnston SC et al. Lancet Neurology 2009
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How Many US Strokes Can Be Prevented by Controlling Risk Factors?
0 100,000 200,000 300,000 400,000
391,935
165,360
97,785
74,730
37,365
Hypertension
Cholesterol
Cigarettes
Atrial Fibrillation
Heavy Alcohol Use
Gorelick PB, et al. Arch Neurol. 1995;52:347-355.Gorelick PB, et al. Stroke. 2002;33:862-875.
Number of preventable strokes
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The International Agenda For Stroke
Prevent Treat Long term care
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The International agenda for stroke
PreventHealthy lifestyles
tobacco control
salt reductiondiet high in saturated fats and sugarharmful alcohol usephysical inactivity
Blood pressure control
Treat
Long term care
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Infancy andChildhood
NutritionObesity
Adolescence
SmokingAlcoholLack of physical
activityDiet Obesity
Adult life
Establishedrisk factors
Stroke prevention – a life course approach
Age
Accumulated risk
Stroke
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The International agenda for stroke
PreventHealthy lifestyles
tobacco control
salt reductiondiet high in saturated fats and sugarharmful alcohol usephysical inactivity
Blood pressure control
TreatStroke unit care
Long term care
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Organized stroke care: stroke units
• Assessment and monitoring
• Early mobilization
• Multidisciplinary care
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Stroke Unit Trialists´CollaborationCochrane Corner. Stroke 2008;39:2402-2403
Organised inpatient (stroke unit)care for stroke
Meta-analysis of 31 RCTs (6936 patients)
Death OR: 0.86 -14 %
Death/institutional care OR: 0.82 -18 %
Death/Dependency OR: 0.82 -18 %
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Absolute benefits of acute stroke therapies in a 1 million population with 2400 strokes/year
NNT Proportion N of deaths/dep
treated avoided
Aspirin 83 80% 23
Trombolysis 15 10% 15
SU care 18 80 % 107
Warlow et al. Stroke. Lancet 2003;362:1211-24
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Proportion of patients treated at stroke units, Sweden 1994 – 2009
Stroke unit
General ward
Other ward
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ORGANIZATION OF STOKE SERVICES
• Primary prevention
• Pre-hospital care
• Emergency room
• Stroke Unit
• Long term carerehabilitation
• Secondary prevention
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Educational tools toestablish stroke units in low resource settings
A network of organized stroke care ….
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Stroke ABC programme
Launched in CapeTown 2006
China 2007
Vietnam 2008
South Korea 2010
Sri Lanka 2011
Marocco 2011
Interested? Welcome to contact!
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The International agenda for stroke
PreventHealthy lifestyles
tobacco control
salt reductiondiet high in saturated fats and sugarharmful alcohol usephysical inactivity
Blood pressure control
TreatStroke unit care
Long term careStrengthen systems for follow up
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Global burden of disabilities in low – mid-income countries
Sousa et al. Lancet 2009;374:1821-30
PAPF, population-attributable prevalence fractions
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The International Agenda For Stroke
Prevent Treat Long term care
Healthy lifestyles Stroke unit StrengthenedBlood pressure control care health systems
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Collaboration is the key