Stroke Flashcards
Blood Clot or Thrombus in cerebral arteries or branches
Cerebral Thrombosis
Traveling bits of matter that produce occlusion and infarction in cerebral arteries
Cerebral embolism
3 types of strokes
Cerebral thrombosis
Cerebral Embolism
Cerebral Hemorrhage
Abnormal bleeding due to a rupture of a blood vessel
Cerebral Hemorrhage
Cerebral Anoxia
Lack of O2 to the brain
Irreversible anoxic damage to the brain occurs after:
4-6 minutes
Cerebral infarction causes what kind of cellular damage?
Irreversible
ICA occlusions typically affect which two arteries?
MCA and ACA
ICA occlusions commonly produce signs and symptoms of what region?
MCA involvement
ACA supplies what portion of the medial cerebral cortex?
Anterior 2/3
ACA syndrome occclusions where will produce minimal deficits? Why?
Proximal to ACA - due to collateral circulatio of circle of Willis
What does the MCA supply (3)
Lateral Cerebral Cortex
Basal Ganglia
Large portions of Internal Capsule
The Basilar Artery supplies ____ and terminates in ____
Ventral Portion of Pons and Terminates in PCA
Medial Medullary Syndrome
Occlusion of vertebral anterior branch of lower basilar artery
Lateral Medullary Syndrome (Wallenberg) (3 arteries)
Occlusion of vertebral, posterior inferior cerebellar or basilar artery
Basilar Artery syndrome produces what syndrome?
Locked in
Basilar Artery syndrome affects what two regions?
Brainstem and PCA signs and symptoms
Medial Inferior Pontine Syndrome
Occlusion of paramedian branch of basilar artery
Lateral inferior pontine syndrome
Occlusion of anterior inferior cerebellar artery
PCA Syndrome affects what arteries?
PCA and posterior communicating
What 4 locations does the PCA effect?
Midbrain
Temporal Lobe
Diencephalon
Posterior third of Cortex
5 stages of Stroke Recovery
- Initial Flaccidity - no movement
- Emergence of spasticity, hyperreflexia, synergies
- Movement in synergies - strong spasticity
- Voluntary control in isolated joint movements - decline in synergy
- Increasing control out of synergy - coordination issues
- Control/coordination near normal
What lobe is associated with perceptual deficits?
Parietal Lobe - usually R
What lobe causes a pt to be slow, caution and hesitant?
Left Hemisphere Lesion
Which side lesion causes people to be impulsive, poor judgement safety?
Right Hemisphere
What causes sissoring?
Spastic Adductors
What will gait look like with weak hip flexors?
Circumduction
When should you not use CIMT?
Patients who do not meet the minimal movement criteria of wrist and finger movement
MCA vs ACA affects more UE or LE
MCA - LE more spared
ACA - UE more spared
Midbrain Lesions causes what two things?
Contralateral Hemiplegia
Contralateral CN III Palsy
What causes contralateral sensory loss
PCA Syndrome
What is a lacunar stroke?
Pure Motor Stroke
What does a pure motor stroke cause?
Contralateral hemiplegia UE and LE
Do you get aphasia with a lacunar stroke?
No - it is pure motor
Pontine Lesion causes issues contralateral or ipsilateral?
Ipsilateral
