Overview of Stroke
Stroke occurs due to brain ischemia or hemorrhage, leading to impaired function. Risk factors include age, HTN, DM, heart disease, and smoking. Types: ischemic (thrombotic/embolic) & hemorrhagic. Prevention: BP control, lifestyle changes, aspirin.
Mason Bennett
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Stroke
- Occurs when there is ischemia or hemorrhage into the brain
- Functions are lost or impaired
- Severity of function loss varies according to location and extent of
brain involved.
Risk Factors
- Nonmodifiable
o Age 65 years
o Sex
o Ethnicity
o Personal circumstances
o Arteriovenous malformation
- Modifiable risks
o HTN
o DM
o Heart disease
o High cholesterol
o Smoking
o Obesity
o Substance use
Types of strokes
- Ischemic
o Result from inadequate blood flow to the brain from partial or
complete occlusion
o Thrombotic
■ Occurs when a blood clot forms in a diseased or narrowed
blood vessel
■ Most common
■ Associated with DM or HTN
■ Preceded byTIAs
o Embolic
■ Occurs when an embolus lodges and occludes a cerebral
artery
■ Results in infarction and edema of the area
■ Second most common cause of stroke
■ Majority of emboli originate in heart
■ Rapid occurance
- Occurs when there is ischemia or hemorrhage into the brain
- Functions are lost or impaired
- Severity of function loss varies according to location and extent of
brain involved.
Risk Factors
- Nonmodifiable
o Age 65 years
o Sex
o Ethnicity
o Personal circumstances
o Arteriovenous malformation
- Modifiable risks
o HTN
o DM
o Heart disease
o High cholesterol
o Smoking
o Obesity
o Substance use
Types of strokes
- Ischemic
o Result from inadequate blood flow to the brain from partial or
complete occlusion
o Thrombotic
■ Occurs when a blood clot forms in a diseased or narrowed
blood vessel
■ Most common
■ Associated with DM or HTN
■ Preceded byTIAs
o Embolic
■ Occurs when an embolus lodges and occludes a cerebral
artery
■ Results in infarction and edema of the area
■ Second most common cause of stroke
■ Majority of emboli originate in heart
■ Rapid occurance
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