Exam 2 Flashcards
(153 cards)
What is a CVA?
Lack of O2 due to secondary ischemia or hemorrhage
What is ischemia?
Lack of blood flow due to blockage
What is hemorrhage?
Bleeding such as, ruptured blood vessel
What is TPA medication?
- Only ischemic CVA
- Breakdown clots and thins blood
- Would make hemorrhagic stroke worse
- Needs to be given during specific time frame
What are primary risk factors to CVA?
HTN, cardiac disease, DM, cigarette smoking, and TIA
What are secondary risk factors to CVA?
Obesity, high cholesterol, behaviors related to HTN, physical inactivity, and increased alcohol consumption
What is TIA?
Transient Ischemic Stroke - mini stroke
Commonly linked to athrosclerotic thrombosis and most often occurs in carotid and vertebrobasilar arteries
Pt presents with some symptoms and resolves within 48 hours
What is a completed stroke?
Total neurological deficits at the onset
What is a stroke in evolution?
Usually caused by thrombus and gradually progresses
Total neurological deficits are not seen for 1-2 hr post
Do not know stroke is coming
What is an ischemic stroke?
Loss of perfusion to a portion of the brain and within seconds there is irreversible infarction
What are the types of ischemic stroke?
Embolus and thrombus
What happens during an embolitic stroke?
Travels through bloodstream to cerebral arteries causing occlusion of BV
Most commonly comes from internal carotid
Occurs rapidly and presents with HA
Tissues distal to the infarct can sustain permanent damage
What happens during a thrombotic stroke?
Caused by arthrosclerotic plaque and occludes artery causing an infarct
Symptoms can appear in minutes or several days
Usually occurs during sleep or upon awakening after an MI or surgery
What are factors that cause hemorrhagic strokes?
HTN can cause rupture of an aneurysm
What are the characteristics of hemorrhagic stroke?
Severe HA Vomiting HTN Abrupt onset Bleeding and symptoms evolve in relation to speed of bleed
What are L hemisphere CVA characteristics?
Weakness, paralysis of the R side
Increased frustration
Decreased processing
Possible aphasia
Possible dysaphagia
Possible motor apraxia (ideomotor and ideational)
Decreased discrimination between L and R
R hemianopsia
What are R hemisphere CVA characteristics?
Weakness, paralysis of the L side
Decreased attention span
L hemianopsia
Decreased awareness and judgement
Memory deficit
L inattention
Decrease abstract reasoning
Emotional lability
Impulsive behaviors
Decreased spatial orientation
What are brainstem CVA characteristics?
Unstable vital signs
Decreased consciousness
Decreased ability to swallow
B weakness and paralysis
What are cerebellar CVA characteristics?
Decreased balance
Ataxia and nausea
Decreased coordination
Decreased ability for postural adjustment
Nystagmus
What is L sided neglect?
Do not recognize the L side of body
Important to draw pt attention to the L side
What is ideational apraxia?
Has no IDEA what the task requires
What is ideomotor apraxia?
Has an idea of what the task requires
Lost kinesthetic memory - no longer able to perform
IE. See pt combing earlier in the day and later when you ask the pt to perform the same task they do not know what to do
Intervention includes part task training
How soon does neuroplasticity become active?
During the first 3 months post stroke
What is Locked-In Syndrome?
Brain knows what to say or do, but cannot