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[Heart disease and stroke]
1Medisinsk divisjon, Ullevål universitetssykehus, 0407 Oslo. eivind.berge@medisin.uio.no
Insights
Heart disease and stroke share common risk factors and treatments. Heart conditions, like atrial fibrillation, can directly cause strokes, necessitating consideration of cardiac sources in brain infarctions.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Public Health
Context:
- Heart disease and stroke are leading causes of death and disability.
- Atherosclerosis is a primary cause for both conditions, highlighting shared risk factors and prognoses.
Purpose:
- To review the intricate relationship between heart diseases and stroke.
- To provide guidance for the clinical management of patients with suspected cardioembolic stroke.
Summary:
- Approximately 25% of cerebral infarctions stem from cardiac embolism, primarily due to atrial fibrillation, but also from conditions like myocardial infarction and prosthetic heart valves.
- Hemodynamic stroke can occur from a cardiac-induced drop in blood pressure in patients with arterial stenosis.
- Patients with atherosclerosis in one arterial system should be managed with the assumption of high risk in other systems.
Impact:
- Emphasizes the critical need to consider cardiac embolic sources in all acute brain infarction cases.
- Informs clinical practice for managing patients at risk of both heart disease and stroke.
- Promotes a holistic approach to patient care by recognizing the interconnectedness of cardiovascular and cerebrovascular health.
Background:
Heart diseases and stroke are the most important causes of death and disability in the Western world. This article gives a review of the relationship between heart diseases and stroke, and gives advice for clinical management of patients with a suspected cardioembolic stroke.
Material And Methods:
The article is based on books and articles found through a search in Medline.
Results And Interpretation:
Most cases of heart disease and stroke are caused by atherosclerosis, and the two diseases have much in common with regards to risk factors, treatment and prognosis. Heart disease may also be a direct cause of stroke. About one in four cerebral infarctions are due to embolism from the heart to the brain, mainly because of atrial fibrillation, but also because of diseases such as acute myocardial infarction, dilated cardiomyopathy and prosthetic heart valves (cardioembolic stroke). Stroke can also be caused by a cardiogenic fall in blood pressure in patients with stenoses in pre- or intracerebral arteries (haemodynamic stroke). Patients with symptoms of atherosclerosis in one artery system should be treated as if they have a high risk of developing symptoms from other artery systems. The possibility of a cardiac embolic source should always be considered in patients with acute brain infarctions.
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