Stroke Flashcards
Mini stroke resolves in 24 hours
TIA - Transient Ischemic attack. Also called pin stroke or mini-stroke
Types of stroke
Hemorrhagic stroke Occlusive
Common feature of Hemorrhagic stroke
Headache very common, accounts for 20% of strokes
Which is more common occlusive or hemorrhagic stroke
Occlusive 80%
Types of Hemorrhagic aneurism BA
- AVM- arterial venous malformation (Fusiform) - artery and vein mingled together –(congenital defect). Very common b/c intracranial pressures rise rapidly,- silent killer- increased BP, or valsalva later in life could cause hemorrhagic stroke.
- intracerebral hemorrhage- rupture of cerebral vessel w/ bleeding into brain
- cerebral hemorrhage- typically in smaller vessels weakened by atherosclerosis
- subarachnoid hemorrhage- occurs from saccular or berry aneurysm (rupture associated with Valsalva ie. bathroom use) and causes bleeding into subarachnoid space- Berry aneurism- looks like berry- out pouching of the vessel
Treatment of Hemorrhagic stroke
Coil or clip
Used for aneurism that has or has not ruptured
Clip
Used when aneurism has not yet ruptured
Coiling –bird’s nest of wire that the aneurism is filled with. Coil would NOT fix a rupture.
Effects of Hemorrhagic aneurism on the brain O2UCH2IS
- Occlusion of the artery- eventually Pressure away from the actual site
- Occlusion of other arteries
- Uncle herniation
- Cells distal to bleed become starved of blood
- Headaches - prolonged
- High blood pressure
- Increased ICP
- Scattered wide spread symptoms- difficulty to decide where issue is stemming from
- Hemorrhagic midline shifts
What type of people does Hemorrhagic stroke affect?
younger people
2 types of occlusive stroke- TE
Thrombolytic- buildup of plaque, lipid hypothesis. caused by poor eating- systemic inflammation, cholesterol medications does not decrease rate of stroke
Embolytic- Placque breaks off,
80% of occlusive stroke are MCA- FACE
Embolytic
Blood clot (easiest to get rid of) using tPA- tissue plasminogen activator- breaks off and flows to the brain, can occur from air embuli, fat embuli and cancer. tPA should be administered within 3h of the manifestation
Thins blood & breaks up blood clots Needs to be administered within 3 hrs after the pt. goes to ER. Made from bats.
tPA
Risk factor if tPA is mistakenly administered with a hemorrhagic stroke.
if Dr. don’t know when stroke started and its origin they will not administer tPA but will give cumadin instead.
Minor stroke symptoms
Lasting symptoms with minor deficits- Limb paresis / paralysis, foot drop, eg, distal part of limb etc.
Major stroke symptoms
Complete (entire side) paralysis Speech problems, cognative issues including memory and planning, harder for them to get back to some level of functioning.
Occlusive but lots of tiny clots breaks off from bigger clot causing tiny strokes in brain -could be caused from doing an endartdectomy in carotid vertebrae.
Shower stroke
Tests done after an occlusive stroke:
- Echocardiogram
- Carotid ultrasound
- CT
- MRI
- BP
Risk Factors for Stroke BAD2 SHA2P
- Birth control – don’t smoke
- Sedentary lifestyle
- Hereditary / family history
- Diet
- A-fib
- Aging
- Post-menopausal
- Drinking
- African American
Symptoms of ACA Syndrome- AIL 710-711 table
- LE affected more than UE
- Apraxia- difficulty / inability to perform task /move
- Incontinence – high risk of skin breakdown (moisture)
- Hemiperesis LE
- Apatethic Akenetic Mutism
- Slowness
- Lack of spontaneity
- Motor inaction
- Contralateral grasp & sucking reflex impaired.
Symptoms of MCA Syndrome U SHAPe- FAST
- UE affected more than LE
- 80% strokes are MCA
- Homonymous Hemianopsia- Know how to draw pic- left occlusion causes losses in right visual field
- Aphasia
- Perceptual deficits
- If right sides MCA. then pt. becomes a pusher, left sided neglect.
- Hemeperesis face and arm
Symptoms of PCA Syndrome CV
Check in red book to get details 652
Cerebellum – balance & coordination Visual Issues, spacial & memory
Hemianopsia
Contralateral hemiplegia
Symptoms of Vertebral Basilar Artery Syndrome
Locked in Syndrome
Rood’s Technique- facilitatory
Way to increase or decrease threshold- normal resting threshold is +3 so nervous system is inhibited or excited in order to maintain the threshold but when contraction is desired we need to create an imbalance in order to increase the treshold to +5 so this is facilitated by the Rood’s technique.