Week 1 Flashcards
(76 cards)
What is a stroke?
A vascular event causing loss of brain function with rapidly developing symptoms lasting more than 24 hours.
What is the difference between a stroke and TIA?
The only difference is timing. A stroke is said to last longer than 24 hours and a TIA less than 24 hours.
Types of stroke (short description)
Haemorrhagic- bleed somewhere causing ischaemia in the brain.
Infarct- blockage causing ischaemia in the brain.
In which type of stroke would you use thrombolysis therapy? What timing should thrombolysis only be used in?
Infarct- when a clot is blocking the artery. Should only be used within 4 hours of symptom onset.
Most common name of thrombolysis treatment?
Tissue plasminogen activator (TPA)
What factors should you consider when deciding when to thrombolyse a patient?
Age Time since onset! Previous intracerebral haemorrhage or infarct BP Diabetes Amount to be gained from thrombolysis
Essential acute management steps of a stroke patient
Thrombolysis/thromboectomy Imaging- CT Swallow assessment Nutrition and hydration Antiplatelets DVT prevention
Why do you have to do a swallow assessment for stroke patients?
Stroke patients may not be able to swallow and therefore are at higher risk of aspiration which can lead to pneumonia.
Give an example of anti platelets?
Aspirin
When is it appropriate to give anti platelets in a stroke?
Need to CT first to exclude a haemorrhagic stroke. Then give aspirin asap to prevent another infarct.
How does aspirin help in stroke patients?
Aspirin is an anti-thrombotic drug that will prevent white (arterial) thrombosis. It prevents new thrombosis from forming.
What precautions should you take to stop DVTs after a stroke?
TED compression stockings
Heparin
Intermittent pneumatic compression
What sorts of different ischaemic strokes can you get?
Cardioembolic- occlusion of the brains blood supply by a clot from the heart. Red clot. Fibrin dependent. This is basically a blood clot.
Atheroembolic- Blockage made of cholesterol- white in appearance.
What prevention methods would you put in place if a patient had a cardioembolic infarct stroke?
Anticoagulants
Stop smoking
Control bp
Diet and lifestyle advice
What prevention methods would you put in place if the patient had a atheroembolic stroke?
Antiplatelet- clopidogrel Stop smoking Control bp Diet and lifestyle Statin
What medical condition can increase your risk of ischaemic stroke?
AF
Examples of anti-coagulants
Heparin, warfarin, low molecular weight heparin
They prevent red thrombosis.
What is delirium?
Defined by 4 traits-
Inattention
Fluctuates and develops acutely
Change in cognition e.g. memory deficit, speech and language disturbances
Why do people get delirium?
Its a direct physiological consequence of a general medical condition e.g. an infection, polypharmacy or a number of causes.
How does delirium differ from depression and dementia?
Delirium is acute in onset and fluctuates over the course of the day whereas dementia doesn’t. Depression takes slightly longer to present and will be worse in the mornings.
Delirium also can cause patients to be agitated (hyperactive delirium) or sleepy and slow (hypoactive). Depression causes the person to be withdrawn and dementia can cause the person to become wandering.
Wandering patient- delirium, depression or dementia?
Likely dementia- patients tend to forget their surroundings and become confused.
Agitated patient- delirium, depression or dementia?
Could either be delirium or dementia. Hyperactive delirium can cause agitation but dementia can do the same.
Onset of confusion within 2 weeks- delirium, depression or dementia?
Likely depression because its not acute enough to be delirium however dementia sets in after a far longer period of time.
Distorted perception e.g. hallucinations and illusions- delirium, depression or dementia?
Likely to be delirium. However severe cases of dementia may have these.
Dementia’s perception is normal in early stages.