Ch 17 - Cerebrovascular Accident Flashcards
Cerebrovascular accident
CVA, stroke, inadequate supply of oxygen and nutrients to brain, can occur in cerebral hemispheres, cerebellum, and brainstem which determines loss of function
Ischemic
Characterized by blockages
Neural plasticity
Brains ability to reroute neural pathways
thrombotic
Occurs when a blood clot forms in one of the arteries supplying the brain causing vascular obstruction at the point of formation
*most frequently in blood vessels that have already been damaged by atherosclerosis
NIGHT
Atherosclerosis
Gradual degenerative disease of the blood vessel walls, fatty deposits form within arteries and often lead to a thrombus (blood clot)
Lacunar strokes
Deep, (dead tissue from lack of blood supply), consistent identified risk factor is hypertension
Embolism
A clot that has formed elsewhere (thrombus) breaks off, travels up the bloodstream until it reaches an artery too small to pass through and blocks the artery
DAY
Hemorrhagic stroke
Rupture in a blood vessel or an aneurysm with a result of bleeding into or around cerebral tissue
Intracerebral- hematoma, bleeding on brain
Subarachnoid- from aneurysm,
Right hemiplegia
Speech vocabulary problems, slow cautious disorganized, right visual field deficit
Left hemiplegia
Spatial perception problems, over confident impulsive, left visual field deficit
Other complications of CVA
Seizures, infection, thromboembolism, transient ischemic attacks, small strokes, subclavian steal syndrome
Impact on Occupational performance
Deficits in sensory, motor, mental, communication, and emotional
Sensory functions
Loss of tactile sensation –> lack of awareness of body, skin breakdown, asymmetrical posture, difficulty maintaining balance, appear to forget affected body parts, unable to describe position or movement of limbs
Visual –> difficulty reading, language, scanning, shifting gaze particularly toward the affected side
Agnosia
Difficulty in understanding the relationship between objects and between self and objects
Apraxia
Reduced motor planning