Exam 3- Stroke part 1 Flashcards
A stroke usually ___ but can ___
~usually appears suddenly
~can appear slowly
Some of the slow appearing strokes (2)
- ~TIAs,
- pin stroke,
- mini strokes
- ~hemorrhagic
2 main types of strokes
Ischemic/ Occlusive and Hemorrhagic
what is the most common type of stroke and by how much?
80% of strokes are occlusive
Hemorrhagic- some details (2 things associated with it)
~High blood pressure
~Associated with headaches
Hemorrhagic- Common types (5)
- ~berry aneurism
- ~AVM (arteriosus venous malformation)
- intracerebral hemorrhage
- cerebral hemorrhage
- subarachnoid hemorrhage
Hemorrhagic- what is berry aneurism?
an out pouching of the circle of willis
Hemorrhagic- what is AVM? (stands for and what it is)
abnormal connection of the artery and vein
(AVM = arteriovenous malformation)
Hemorrhagic- 3 courses for an aneurism
- It never bursts
- It is detected and fixed before it bursts
- Pick up on a scan when looking for it
- Pick it up on a another scan (looking at something different)
- ~it bursts and pt has CVA
2 ways to fix an aneurism
Clip and coil
Clip for an aneurism: when can it be used and how invasive is it?
- ~can be used for an aneurism that has or has not burst
- ~Need a craniotomy
Coil for an aneurism:
when can it be used?
what does it do?
and how invasive is it?
- ~for people for not ruptured~
- a birds nest of wire that fills the hole
- ~will cause the body to fill back in the aneurism
- ~Do not need a craniotomy
Hemorrhagic- how does it injure the brain? (5)
- ~cell starved of blood distal to bleed
- ~pressure on cells right at the site; usually occlude broken artery
- ~pressure away from the site; can act like a contra coup injury
- ~other arteries can be occluded
- ~may have uncal herniation and/or
- midline shift
Hemorrhagic- four typical characteristics of pt in PT
- ~wide spread injury/problems
- ~will be hard to decide where their symptoms came from
- ~will be younger
- ~rarely will fully recover
Occlusive- 2 types
~thrombolytic
~embolytic
Occlusive- what is Thrombolytic
Build up of plaque, etc that will cause a blockage in the artery
Occlusive- what is Embolytic?
Blood/plaque/ air/ fat/cancer breaks off and moves (and plugs the artery)
Occlusive- Embolytic- blood clot, three characteristics of emergency treatment
- the easiest embolytic occlusion to treat
- ~We can do a good a good job getting rid of blood clots with TPA tissue plasminogen activators- thins blood and gets rid of blood clots
- ~need to give tPA to someone within 3 hours
- ~More than 3 hours, the structures distally already starting to die
- ~Its not worth the risk to thin the blood that much after 3 hours
Occlusive- Embolytic- fat bock: what is a common source?
can caused post surgery
TIA
what does it stand for?
what defines it?
Transient ischemic attack
defined by: symptoms resolve within 24 hours
Six characteristics of a Major stroke
- ~Complete paralyze on one side
- ~High cortical processes loss
- ~Has come cognitive loss
- ~Speak problems
- ~Visual problems
- ~Much harder for pt to return to function
Three characteristics of a minor stroke
- ~Still the same person you were before- personality stays the same
- ~Steppage gait; foot drop; some limb paresis
- ~A little sensory or motor deficit; distal portion of the UE or LE
What is a shower stroke?
what is a common cause?
(3 points)
- ~Lots of little strokes all over
- ~Occlusive, sometimes when a clot breaks off a lot of little clots will break off too
- ~Can occur after surgeries when you are trying to prevent/correct for a stroke-
- endarterectomy (plaque build up in the carotids)
- ~The plaque can lead to a shower stroke if all the plaque is not sucked up
some Diagnosis Tests to test for possible stroke (3)
- ~Echocardiogram- did it happen from a build up of blood settling in the heart
- ~CT/ MRI
- ~Carotid US- did it happen form a build up from plaque in the carotids
12 risk factors for stroke
- ~Birth control
- ~smoke
- ~high blood pressure
- ~diabetes
- ~high cholesterol
- ~sedentary
- ~history of CVA
- ~A-fib
- ~age
- ~postmenopausal
- ~drinker
- ~African American
anterior cerebral artery syndrome- symptoms (7)
- ~Contralateral issues
- ~LE more than UE- hemiparesis and hemisensory loss
- ~More apraxia (inability to perform a task)
- ~Problems with imitation and bimanual tasks
- ~Slowness, delay, lack of spontaneity, motor inaction
- ~High risk of Incontinence issues
- ~Higher risk of skin break down
middle cerebral artery syndrome- symptoms (8)
- ~80% have MCA
- ~80% of MCA have occlusive
- ~UE worse than LE- hemiparesis and hemisensory loss
- ~Aphasia (problems with speak)- motor speech impairment
- ~Perception deficits
- ~Limb-kinetic apraxia
- ~Homonymous hemianopia (be able to draw this);
- Unilateral neglect (think of Bob)
posterior cerebral artery syndrome- symptoms (3)
- ~Visual issues
- *homonymous hemianopsia
- *can be bilateral homonymous hemianopsia with some degree of macular sparing
- *visual agnosia
- *prosopagnosia
- ~Cerebellar issues- balance and coordination
- ~Memory defect