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University revision · Neuroscience

Clinical Neurology: Stroke Localization and Management

Question 1 of 11 Course: Medicine(Degree)
Q1
In the natural progression of cerebrovascular accident (CVA): Hypertonia is especially marked in a pure 'pyramidal' lesion, e.g. in the medullary pyramid.
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About this topic

This topic delves into the clinical application of neuroanatomy for localizing strokes based on presenting signs such as hemiplegia, hemianesthesia, and homonymous hemianopia. For Zambian university medical students and clinical officers, mastering stroke localization is critical for rapid diagnosis and intervention, which is vital in resource-limited settings. The content focuses on correlating vascular territories like the middle cerebral artery with specific functional deficits, understanding the anatomy of the internal capsule and visual pathways, and initiating appropriate pharmacological management for post-stroke complications like seizures or abnormal movements. This knowledge is directly tested in tertiary examinations and is indispensable for clinical rotations in internal medicine and neurology at Zambian teaching hospitals. It equips future healthcare professionals with the skills to improve outcomes for a leading cause of disability in Zambia, aligning with national health priorities.

What you'll practise (11 questions)

  1. Occlusion of the left middle cerebral artery (MCA) can produce all of the following signs EXCEPT:
  2. Occlusion of the left middle cerebral artery causes contralateral face and arm weakness.
  3. In cerebrovascular accidents (CVA): Most cases are due to haemorrhage.
  4. In cerebrovascular accidents (CVA): An embolus of only 1 mm across can block any vessel on the cerebral surface and trigger a stroke.
  5. In cerebrovascular accidents (CVA): Prothrombotic states include a rise in antithrombin III.
  6. In cerebrovascular accidents (CVA): A transient ischaemic attack (TIA) usually lasts < 10 min.
  7. In the natural progression of cerebrovascular accident (CVA): Hyperreflexia is typical in a completed CVA.
  8. In the natural progression of cerebrovascular accident (CVA): Hypertonia is especially marked in a pure 'pyramidal' lesion, e.g. in the medullary pyramid.
  9. In the natural progression of cerebrovascular accident (CVA): Excellent recovery can be expected after a pure pyramidal lesion.
  10. In the natural progression of cerebrovascular accident (CVA): Aspirin definitely reduces incidence of stroke after a TIA.
  11. Occlusion of the left middle cerebral artery can produce the following signs EXCEPT:

Answer each question above to see the correct answer and a full explanation.