Health Science 2211-Lecture 6 (2)

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Author:
CanuckGirl
ID:
259645
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Health Science 2211-Lecture 6 (2)
Updated:
2014-02-01 15:40:30
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cerebral infraction stroke
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Description:
cerebral infraction (stroke)
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  1. Define stroke.
    is the rapidly developing loss of brain function due to interruption of the cerebral blood supply and necrosis of neurons in part of the brain
  2. what are the 2 types of stroke, briefly describe each.
    • ischemic stroke: caused by interruption of the cerebral blood supply without bleeding (85% most common)
    • hemorrhagic strokes: involve rupture of a cerebral blood vessel and leakage of blood into the brain (15% less common)
  3. How does oxygenated blood travel to the brain?
    • oxygenated blood from the left heart travels upward through the carotid and vertebral arteries arising aortic arch
    • blood is further distributed to the brain through complex network or cerebral arteries, arterioles and capillaries
  4. what are the 4 clinical subtypes if ischemic stroke?
    • typical severe stroke: most often due to advanced atherosclerotic lesions in cerebral arteries and/or longstanding high blood pressure
    • transient ischemic attack (TIA): resolves completely within 24 hrs
    • completed stroke: persists longer than 24 hrs
    • fatal stroke: is completed stroke followed by death within 28 days
  5. what are the warning signs of stroke? (6)
    • sudden weakness of face, arm or leg (face drooping)
    • sudden numbness of face, arm or leg
    • trouble speaking/slurred speech
    • trouble seeing
    • trouble walking
    • severe headache
  6. what are the 3 was to diagnose stroke with imaging tests?
    • MRI or CT scan: of brain tissue
    • ultrasound: performed on carotid arteries in neck
    • Cerebral angiogram: use special dyes and x-rays to view blood vessels supplying the brain
  7. Neurological symptoms depend on ________ and _____________.
    • location
    • size of lesion
  8. what are the clinical consequences of ischemic stroke when the right brain is affected? (4)
    • paralysis of left side of body
    • vision problems
    • quick, inquisitive behavioural style
    • memory loss
  9. what are the clinical consequences of ischemic stroke when the left brain is affected? (4)
    • paralysis of the right side of body
    • speech/language problems
    • slow, cautious behavioural style
    • memory loss
  10. what are the top 2 causes of mortality worldwide?
    • 1.cornory heart disease
    • 2.cerebral infraction (stroke)
  11. Stroke can cause both _______ and _________ thus creating a dual health burden.
    death and disability
  12. primary prevention is the reason of decline in stroke in developed nations. what are some examples? (2)
    • avoid smoking
    • maintaining blood pressure, cholesterol and blood glucose within normal limits
  13. secondary prevention is also the reason of decline in stroke in developed nations. what are some examples
    • treatment of hypertension, hyperglycemia, hyperlipidemia
    • use of anti-platelet therapy ex. low dose aspirin

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