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Stroke

Prevalence
Clinical features
Investigations
Therapy
Prevention
Prognosis
Clinical features

Ask about risk factors for stroke
  • hypertension (particularly a diastolic BP ≥ 100 mmHg) a b
  • atrial fibrillation a
  • diabetes mellitus a b
  • smoking a  
  • high cholesterol a  
  • history of stroke or TIA  b  particularly with other risk factors b
  • ischaemic heart disease b 
  • valvular heart disease a 
  • infection within the previous week b  
  • oral contraceptive pill use b  
The risk of stroke increases with increasing numbers of risk factors b
Also ask about
  • a history of depression a  
A stroke is less likely with
  • hormone replacement therapy a
  • moderate alcohol consumption a
Listen for
  • a carotid bruit a particularly with a history of TIA or diabetes a
  • mitral valve prolapse b  
  • aortic stenosis a
Assess your patient's functional status specifically looking at 
  • upper limb motor function b
  • proprioception b
  • ability to stand and walk b
  • dysphagia a  
  • visual neglect c  
  • urinary incontinence b  
  • a reduced level of consciousness a  b  
Classify your patient's type of stroke (based on maximal deficit). a

The clinical features of stroke subtypes

Stroke subtype features
lacunar infarcts (LACI) pure motor or sensory stroke, sensorimotor stroke, or ataxic hemiparesis
total anterior circulation infarcts (TACI) a combination of new higher cerebral dysfunction (e.g., dysphasia), homonymous visual field defect, and ipsilateral motor or sensory deficit of at least 2 areas of face, arm, and leg
partial anterior circulation infarcts (PACI) only 2 of 3 components of TACI; higher cerebral dysfunction alone or with motor/sensory deficit more restricted than for LACI
posterior circulation infarcts (POCI) brain stem or cerebellar dysfunction

 

Expiry date: October 2003
Levels of Evidence used in grading these guides

Author   CM   Ball
Reviewer   G  Donnan
CAT Writers   CJ   Wotton , N   Shenker , CM   Ball