EXAM 2B - STROKE Flashcards
__________ contributes to over 12.7 million strokes annually
Hypertension
Non-modifiable contributing factors of stroke
Age. Common in ppl aged 55>
Gender - women
Ethnicity - NZ Maori
Genetics
Modifiable contributing factors of stroke
Hypertension. High cholestol. Diabetes. Smoking. Obesity
Two types of stroke are
Ischaemic stroke & Haemorrhagic stroke
Ischaemic stroke accounts for 85% of strokes. What are the two sub classifications of this?
Cerebral embolism>a blood clot formed elsewhere that travels to the brain. Unable to pass it will block the artery, interrupting blood flow causing tissue ischaemia
Cerebral thrombosis>narrowing of cerebral arteries causing plaque build-up. Clot then forms on the plaque, blocking the blood flow to brain
Haemorrhagic stroke. What happens in this type of stroke
A burst blood vessel will cause blood to leak into brain tissue and surrounding structures, causing a rise in intracranial pressure and damage to brain tissue
Transient ischaemic attack (TIA) what is this
A temporary focal loss of neurological function caused by ischaemia, resolves within 1-2 hours. Results from < blood flow to brain or partial or complete occlusion of artery. HIGH RISK FOR STROKE
Cerebral aneurysm’s occur where?
Circle of Willis
Brainstem strokes may lead to
Coma
Breathing problems, spontaneous changes in blood pressure and heart rate
Nausea and vomiting
Cerebellar strokes
Ataxia[drunk like, slurred speech], dysarthria, incoordination, nystagmus[eyes making uncontrolled movement]
Differences between RBI[right brain injury/stroke] to LBI[left brain injury/stroke]
RBI
Paralysed left side
Special perceptual deficits
QUICK, impulsive behavioural style
Memory deficits
LBI
Paralysed right side
Speech and language deficits
SLOW, cautious behavioural style
Memory deficits
You’re throwing an education session on signs and symptoms to watch for if a person is about to have a stroke. What do you mention
FAST ACRONYM Face –has it drooped Arm – is one arm weaker Speech – is it slurred, jumbled? Time – act fast
Signs and symptoms include Paralysis/weakness in the face, arms &/or legs. Confusion. Personality changes. Sudden change in eyesight. Decreased motor skills. Severe headaches
Nursing interventions – acute phase
Maintain head of bed 30◦
to facilitate jugular venous drainage and help reduce intracranial pressure
Maintain systolic blood pressure within prescribed parameters (often < 180mmHg)
to reduce the potential for further bleeding or ischaemic changes
Continuous neurological observations
to help identify deterioration to initiate timely intervention and treatment
Ensure patient is kept NBM until swallow is assessed by Speech and Language Therapist
to prevent aspiration of oral fluid and food
Administer prescribed aspirin orally or enterally
to impede clotting and prevent further ischaemia
Nursing management – rehabilitation.
Goals are that the patient will:
Attain maximum physical functioning
Attain maximum self-care abilities and skills
Maximise communication abilities
Maintain adequate nutrition
Avoid complications
Maintain effective personal and family coping
Make positive lifestyle changes (health promotion)