*strokes* Flashcards
What is a cerebrovascular accident?
obstruction or rupture of an artery in the brain!!
What are the two types of risk factors in terms of why we have intracranial hemorrhage?
non modifiable
modifiable
What are modifiable risk factors?
High blood pressure
High cholesterol (lipid medications)
Cigarette smoking (Birth control >35 yrs old + smoking= higher risk)
TIA
Heart disease
Diabetes mellitus
Non-modifiable risk factors?
Age
Gender
Race
Prior stroke
Hereditary (high cholesterol)
Hypercoagulopathy (blood clot easily- autoimmune diseases)
High RBC and sickle cell anemia
What is the circle of willis???
collateral blood flow
- scalp vessels, vessels of the dura and arachnoid
What does occlusion of the circle of willis result in?
infarct and ischemia
What is cerebral blood flow?
auto regulation of the cerebral vessels
How is perfusion in the arteries regulated? By what two things?
Oxygen and glucose
Ischemia and acidosis are VASO_____!!
dilators
What are the types of strokes?
ischemic and hemorrhagic
What are ischemic strokes?
occlusion of an artery from plaque buildup (high cholesterol- greasy food)
embolus causing sudden obstruction
(thrombi may break off)
S/S of an ischemic stroke?
Hemiparesis or Hemiplegia (contralateral)
Numbness (contralateral) and facial drooping
Aphasia (unable to speak)
Confusion or coma
Convulsions
Incontinence
Diplopia (double vision)
Dysarthria (slurred speech)
Headache, dizziness
What is a thrombus?
blood clot
What is an embolus?
obstruction of blood flow due to a mass of undissolved matter lodging in a vessel
What are hemorrhagic strokes?
blood vessel of the brain has BLOWN