Stroke - Level 4 Exam Questions with
Accurate Solutions Scored A+
Stroke - ANSWER--occurs when there is ischemia to part of the brain or hemorrhage
into the brain that results in death of brain cells
-functions controlled by that portion of the brain are impaired or lost
-also called brain attack and cerebrovascular accident (CVA)
-can occur at any age
Common long term disabilities of stroke - ANSWER--hemiparesis
-inability to walk
-complete or partial dependance for ADLs
-aphasia
-depression
Risk factors for CVA - ANSWER-NONMODIFIABLE
-male gender
-advanced age (>65)
-African Americans
-family hx of stroke
-sickle cell disease
-migraine headaches
MODIFIABLE
-HTN***
-heart disease: a fib**, MI, cardiomyopathy, valvular abnormalities
, -diabetes mellitus
-smoking
-excessive alcohol consumption
-obesity (especially abdominal)
-sleep apnea
-metabolic syndrome
-lack of physical exercise
-poor diet: high fat and low in fruits and veg
-drug abuse
-increased cholesterol
-early forms of birth control pills with high levels of progestin and estrogen
Cerebral blood flow regulation - ANSWER--blood flow must be maintained at 750 to
1000 mL/min or 20% of cardiac output for optimal brain functioning
-if blood flow is totally interrupted neuro metabolism is altered in 30 secs
-metabolism stops in 2 mins
-cellular death occurs in 5 mins
-cerebral auto regulation: changes in the diameter of cerebral blood vessels in response
to changes in pressure so that blood flow to the brain stays constant
-when ischemia occurs, impairs auto regulation
-CO2 = potent vasodilator
-increased CO2 levels increase cerebral blood flow
-decreased CO2 levels decrease cerebral blood flow
-arterial O2 less than 50 mm Hg increases cerebral blood flow
-increased H+ concentration increases cerebral blood flow
Accurate Solutions Scored A+
Stroke - ANSWER--occurs when there is ischemia to part of the brain or hemorrhage
into the brain that results in death of brain cells
-functions controlled by that portion of the brain are impaired or lost
-also called brain attack and cerebrovascular accident (CVA)
-can occur at any age
Common long term disabilities of stroke - ANSWER--hemiparesis
-inability to walk
-complete or partial dependance for ADLs
-aphasia
-depression
Risk factors for CVA - ANSWER-NONMODIFIABLE
-male gender
-advanced age (>65)
-African Americans
-family hx of stroke
-sickle cell disease
-migraine headaches
MODIFIABLE
-HTN***
-heart disease: a fib**, MI, cardiomyopathy, valvular abnormalities
, -diabetes mellitus
-smoking
-excessive alcohol consumption
-obesity (especially abdominal)
-sleep apnea
-metabolic syndrome
-lack of physical exercise
-poor diet: high fat and low in fruits and veg
-drug abuse
-increased cholesterol
-early forms of birth control pills with high levels of progestin and estrogen
Cerebral blood flow regulation - ANSWER--blood flow must be maintained at 750 to
1000 mL/min or 20% of cardiac output for optimal brain functioning
-if blood flow is totally interrupted neuro metabolism is altered in 30 secs
-metabolism stops in 2 mins
-cellular death occurs in 5 mins
-cerebral auto regulation: changes in the diameter of cerebral blood vessels in response
to changes in pressure so that blood flow to the brain stays constant
-when ischemia occurs, impairs auto regulation
-CO2 = potent vasodilator
-increased CO2 levels increase cerebral blood flow
-decreased CO2 levels decrease cerebral blood flow
-arterial O2 less than 50 mm Hg increases cerebral blood flow
-increased H+ concentration increases cerebral blood flow
