Neurology Flashcards
7 s/s of stroke ?
- SUDDEN numbness or weakness of face, arm or leg
- confusion, dizziness
- trouble speaking or understanding speech
- trouble seeing out of one or both eyes
- trouble walking
- loss of balance or coordination
- severe headache with no known cause
4 non-modifiable risk factors for stroke?
- age (doubles after 55)
- M>F
- family Hx
- previous stroke or TIA
6 modifiable risk factors for stroke?
- HTN
- cardiac disease
- DM
- hypercholesterolemia
- smoking
- increased BMI
_______ stroke = caused by thrombosis, embolism or lacunar infant
ischemic
What is the area called post ischemic stroke that is supplied by collaterals, so has the possibility of preservation?
ischemic penumbra
2 types of neurons that are especially sensitive to ischemia ?
- cerebellum
2. hippocampal
Post ischemic stroke, there is release of _____ , ___, edema , and O2 free radicals leading to degeneration
glutamate; calcium
TPA should be administered within ___ hours of stroke n order to be effective
3
_______ stroke caused by aneurysm or AV malformation
hemorrhagic
Majority of hemorrhagic strokes occur in what 2 areas ?
- cerebral cortex
2. basal ganglia
Hemorrhagic strokes have better long term prognosis compared to ischemic (T/F)
TRUE
ABCD score for prediction of progression and risk of recurrence ?
A = age B = blood pressure C = clinical features D = duration
____ matter is capable of functional reorganization
grey
What is a sign that the pyramidal motor output is intact post stroke ?
if they can move their fingers !
_____ stroke is very disabling as it takes out the ascending AND descending tracts
brainstem
2 ways TBI can be classified ?
- open
2. closed
TBI: Coup = _____ mechanical injury
primary
TBI: coutracroup = ______ mechanical injury
secondary
Countracoup injury can include ____ and ______
ischemia; edema
_____ ______ _____ = sheering / tearing from rotational forces in areas of density change (grey –> white matter)
diffuse axonal injury
After a TBI, blood flow is usually less than ___% of original injury
50
______ hematoma is associated with skull # 90% of the time
epidural
Epidural hematomas are almost always in what 2 areas?
- temporal
2. tempoparietal
Epidural hematoma = (arterial/ venous) bleed
arterial