Stroke Flashcards

1
Q

What is stroke?

A

The experience of persisting neurological complications of CVD

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2
Q

What is a TIA?

A

A TIA is a brief episode of neurologic dysfunction caused by focal brain or retinal ischemia, with clinical symptoms typically lasting less than one hour, and without evidence of acute infarction

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3
Q

What does acute cerebrovascular syndrome cover?

A

With or without evidence of cerebral infarction
Source of embolus (threat)?
With or without evidence of cerebral haemorrhage

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4
Q

What are some stroke mimics?

A
Seizure
Sepsis
Toxic/metabolic
SOL
Pre (syncope)
Acute confusion
Vestibular dysfunction
Functional
Dementia
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5
Q

What score should be used to get the stroke diagnosis correct?

A

Rosier scoe

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6
Q

How is the type of stroke found?

A

CT

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7
Q

What classification is used to assess the size of stroke?

A

Oxford Classifcation
Total Anterior Circulation Syndrome (TACS)
Partial Anterior Circulation Syndrome (PACS)
Lacunar Syndrome (LACS)
Posterior Circulation Syndrome (POCS)

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8
Q

Describe TACS

A

Hemiplegia involving at least two of face, arm and leg +/- hemisensory loss
Homonymous Hemianopia
Cortical signs (dysphasia, neglect etc)
Most severe (5% alive and independent at 1y)

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9
Q

Describe PACS

A

2 out of 3 features present in a TACS or;
Isolated Cortical Dysfunction such as dysphasia or;
Pure motor/sensory signs less severe than in lacunar syndromes
(eg monoparesis).
55% of patients alive and independent at 1y

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10
Q

Describe LACS

A

Lacunar infarcts are small infarcts in the deeper parts of the brain (basal
ganglia, thalamus, white matter) and in the brain stem.
Caused by occlusion of a single deep penetrating artery. Affect 2 any two
of face arm and leg
60% alive and independent at 1y

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11
Q

Describe POCS

A
Cranial nerve palsies
Bilateral motor and/or sensory deficits
Conjugate eye movement disorders
Isolated homonymous hemianopia
Cortical blindness
Cerebellar deficits without ipsilateral motor/sensory signs (in
contrast to Ataxic Hemiparetic lacunar syndrome) 
60% alive and independent at 1y
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12
Q

Why is laterality important in prognosis/management?

A
Dominant hemisphere (left) cortical events often affect language (major implications for rehab)
Non dominant hemisphere (right) cortical events affect spatial awareness (neglect)
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13
Q

What are the components of the full diagnosis of stroke?

A

Type
Size
Laterality
Cause

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14
Q

What are some causes of ischaemic cerebrovascular disease?

A

Atherothromboembolism
Intracranial small-vessel disease
Cardiac source of embolism
Rare causes

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15
Q

What is type 1 small vessel disease?

A

Ateriosclerotic (age/RF related)

  • Fibrinoid necrosis
  • Lipohyalinosis
  • Microatheroma
  • Microaneurysm
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16
Q

What is type 2 small vessel disease?

A

Sporadic and hereditary cerebral amyloid angiopathy

17
Q

What is type 3 small vessel disease?

A

Genetic small vessel disease distinct from cerebral amyloid angiopathy
e.g. CADASIL

18
Q

What is type 4 small vessel disease?

A

Inflammatory and immunologically mediated

e.g. Churg-Strauss syndrome, Wegener’s granulomatosis

19
Q

What is type 5 small vessel disease?

A

Venous collagenosis

20
Q

What is type 6 small vessel disease?

A

Other small vessel disease

e.g. post radiation angiopathy

21
Q

What are the causes for primary intracerebral haemorrhagic stroke?

A

Hypertension

Amyloid angiopathy

22
Q

What are the causes for second intracerebral haemorrhagic stroke?

A

Arteriovenous malformation
Aneurysm
Tumour etc

23
Q

What are lobar and deep haemorrhages more likely to be related to?

A

Lobar: cerebral amyloid angiopathy
Deep: blood pressure

24
Q

What different types of stroke effect treatment?

A
Cardioembolic
• Fibrin dependent “red thrombus”
– Atheroembolic
• Platelet dependent “white thrombus”: Cf Acute Coronary Syndrome
– Small vessel disease
• Arteriosclerosis
• Microatheroma of the ostium,
• Embolism (athero and cardioembolism)
• changes in hemorrheology
• etc
25
Q

What investigations should be carried out?

A
Full lipid profile
BP
Carotid scan
ECG
Consider: 24hr ECG, Echo
26
Q

What is the ABCD of medical stroke prevention?

A
Antithrombotic therapy (antiplatelet/coagulant)
Blood pressure
Cholesterol
DM
Don't smoke
27
Q

What is the ABCD(2) of stroke risk prediction in patients with transient neuro symptoms?

A
Age >=60 =1
BP >=140/90 =1
Clinical features
-Unilateral weakness=2
-Speech disturbance without weakness=1
-Other=0
Duration
->=60=2
-10-59=1
=5 is considered at serious risk
28
Q

What antiplatelet therapy should be used in stroke prevention?

A

Aspirin
Clopidogrel
Dipyridamole

29
Q

What level of reduction of recurrent stroke at 2 years does carotid endarterectomy show?

A

65%