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Stroke risk factors and stroke prevention
1Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York, USA.
Insights
Stroke is a major cause of death and disability. Identifying and managing risk factors like hypertension and atrial fibrillation can significantly reduce stroke incidence and impact.
Area of Science:
- Neurology
- Public Health
- Epidemiology
Background:
- Stroke is a leading cause of death and chronic disability in the US.
- Numerous nonmodifiable and modifiable risk factors for stroke have been identified.
- Ongoing research explores additional potential stroke risk factors.
Purpose of the Study:
- To review established and emerging stroke risk factors.
- To highlight the impact of modifiable risk factors on stroke incidence.
- To emphasize the role of interventions in stroke risk reduction.
Main Methods:
- Review of case series, case-control studies, and prospective cohort studies.
- Analysis of controlled trials evaluating risk factor interventions.
- Synthesis of current understanding of stroke etiology and prevention.
Main Results:
- Established modifiable risk factors include hypertension, atrial fibrillation, hyperlipidemia, diabetes, smoking, inactivity, carotid stenosis, and transient ischemic attack (TIA).
- Interventions such as blood-pressure control, lipid-lowering agents, and anticoagulation have proven effective in reducing stroke risk.
- Research continues to investigate factors like antiphospholipid antibodies, homocysteine, alcohol, inflammation, and infection.
Conclusions:
- Understanding and managing modifiable stroke risk factors is crucial for reducing the public health burden of stroke.
- Effective interventions exist for several key risk factors, demonstrating the potential for primary and secondary stroke prevention.
- Continued research into novel risk factors may further refine stroke prevention strategies.
Abstract:
Stroke is the third leading cause of death and the leading cause of chronic disability in the United States. In the past several decades, case series, case-control studies, and prospective cohort studies have successfully identified nonmodifiable risk markers for stroke, such as age, gender, race, ethnicity, heredity and several well-established modifiable risk factors for ischemic stroke. Hypertension, atrial fibrillation, other cardiac diseases, hyperlipidemia, diabetes, cigarette smoking, physical inactivity, carotid stenosis, and transient ischemic attack (TIA) are all potentially treatable conditions that predispose to stroke. Research on other putative stroke risk factors-including antiphospholipid antibodies, elevated homocysteine, alcohol, inflammation, and infection-is ongoing. Controlled trials have shown that stroke risk can be reduced by blood-pressure control, lipid-lowering agents, surgery for carotid stenosis, warfarin for atrial fibrillation, and antiplatelet agents. It is hoped that an improved understanding of stroke risk factors will reduce the future burden of stroke.