Neurological conditions Flashcards
What is a neurological disorder?
any disorder of the nervous system, both centrally (brain and spinal cord) and peripherally (nerves)
What are the four main types of neurological disorders?
sudden-onset conditions
intermittent and unpredictable conditions
progressive conditions
stable conditions
List some examples of sudden-onset conditions.
acquired brain injury
spinal cord injury
List some examples of intermittent and unpredictable conditions.
epilepsy
chronic fatigue syndrome (CFS/ME)
certain types of headache
early stages of multiple sclerosis
List some examples of progressive conditions.
motor neurone disease
Parkinson’s disease
later stages of multiple sclerosis
List some examples of stable conditions.
post-polio syndrome
cerebral palsy in adults
What are some of the symptoms of Parkinson’s disease other than tremor?
balance and falls stress and anxiety dementia mild thinking problems sleep problems dexterity issues urinary problems
What is the biggest risk factor for dementia?
age
What is the cost of delivering services for people with neurological conditions?
£3.3 billion
What percentage of the social care budget is spent on supporting people with neurological conditions?
14%
What is the cost of delivering urgent and emergency care for people with neurological conditions?
£750 million
What percentage of people diagnosed with a neurological condition will die prematurely due to complications?
35%
What is the prevalence of dementia in the UK?
850,000
What is the prevalence of acquired brain injury in the UK?
348,453 admissions to hospital in 2016/17
What is the prevalence of epilepsy in England?
362,000-415,000
What is the prevalence of multiple sclerosis in England?
190 cases per 100,000
105,800
What is the prevalence of motor neurone disease in England and Wales?
4,000 at any one time
What is the prevalence of Parkinson’s disease in the UK?
up to 160 per 100,000
annual incidence of 15-20 per 100,000
What is the prevalence of cerebral palsy in the UK?
2-2.5 cases per 1,000 live births
What is the prevalence of cerebrovascular accident (CVA) in the UK and worldwide?
150,000 per year
20,000 occur in people <65 yrs
the second biggest cause of death in the UK
up to 22% of people die within 30 days
1.2 million CVA survivors in the UK
15 million cases and 5 million deaths per year worldwide
List ten risk factors of CVA.
diabetes high blood pressure, high cholesterol obesity, smoking, alcohol congenital heart defects coronary heart disease ethnic origin gender
What percentage of CVA cases are caused by modifiable factors?
90%
poor diet increases risk by 11%
smoking doubles risk of ischaemic stroke
How many times more likely are people with diabetes to develop a CVA?
2-6 times
What percentage of CVA cases are associated with high blood pressure?
50%
People from which ethnicities are more likely to develop conditions associated with CVA?
caucasian - increased risk of AF
black - increased risk of sickle cell disease and its complications, hypertension, diabetes
South Asian - increased risk of hypertension, hyperlipidaemia, diabetes
What is the definition of CVA according to Tadi and Lui (2020, p. 1)?
“Acute stroke is defined as the acute onset of focal neurological findings in a vascular territory as a result of underlying cerebrovascular disease.”
What is the definition of a transient ischaemic attack (TIA) according to Khare (2016, p. 1)?
”..transient episode of neurological dysfunction caused due to loss of blood flow to the brain or spinal cord without acute infarction.”
How can you compare a CVA and TIA without further investigation?
the time period of recovery
TIAs last <1 hr or up to 24 hrs
there is debate as to whether the 24 hr period is a useful indicator
Why was the FAST acronym developed?
to educate the public and healthcare professionals in early detection of CVA
What does FAST stand for?
Face - facial weakness and drooping, which may include the mouth, eyes or both
Arms - inability to lift one or both arms, due to weakness or numbness
Speech - inability to talk, or understand what is being said, with or without slurred speech
Time - a factor in accessing treatment for a suspected CVA or TIA
What is the ROSIER (Recognition of Stroke in the Emergency Room) assessment?
a test to distinguish between CVA and TIA: loss of consciousness or syncope seizure activity asymmetric facial weakness asymmetric arm weakness asymmetric leg weakness speech disturbance visual field defect
What happens if there is a suspected CVA following the ROSIER assessment?
CT imaging
this must be undertaken as soon as possible, due to the time limit for administering medication to patients with suspected ischaemic CVA
What percentages of CVAs are ischaemic compared with haemorrhagic?
ischaemic - 85%
haemorrhagic - 15% (10% intracerebral and 5% subarachnoid)
What is a TIA?
the same as a CVA, except symptoms last <24 hrs
almost a third of patients with TIA develop a disabling stroke within 5 years
the majority of strokes occur within 18 months (highest risk in the first few days/weeks post-TIA)
5% of TIAs lead to a CVA within 48hrs
15% of ischaemic CVAs precede a TIA
What is a carotid assessment?
required to detect carotid stenosis
50% requiring endarterectomy (removal of atheroma)
What is the initial course of action in the treatment of a CVA?
to determine whether the CVA is ischaemic or haemorrhagic
What is thrombolysis?
treatment which aims to break down the thombosis in ischaemic CVA
Which drug is recommended by NICE in the management of thrombosis?
alteplase
What is the time period for the administration of alteplase for the treatment of ischaemic CVA?
within 4.5 hours of onset of symptoms
it can be administered up to 6 hours, but is less beneficial with reduced patient outcomes
What proportion of patients are eligible to receive thrombolysis?
around 8 in 10
What percentage of patients do not receive thrombolysis due to staff availability and competency?
15%
What other reasons for not receiving thrombolysis relate to not meeting the necessary criteria?
haemorrhagic CVA
patient is unable to recall when symptoms began
delay in reaching a hospital in time and lack of resources
bleeding disorder (e.g. haemophilia)
recent major surgery
CVA or head injury within the past three months
current medication interacts with alteplase
What is a thrombectomy?
alternative to thrombolysis
this needs to be assessed for suitability and patient health
this can occur within 6 hours of onset of symptoms, and in certain cases up to 24 hours with the entry point being the femoral artery
What is a carotid endarterectomy?
a surgical procedure to remove plaques from a carotid artery with the goal of preventing strokes
it is carried out by separating the plaque from the arterial wall
the operation may last between 1-2 hours depending on the complexity of the operation and the patient’s medical history