The Brain: Stroke Flashcards
In what part of the brain does motor information primarily originate from?
The Primary Motor Cortex, Frontal Lobe
What are the two main types of stroke?
Ischemic and hemorrhagic stroke
Name 4 clinical symptoms of a stroke?
Motor deficit, Sensory deficit, Receptive or Expressive dysphasia, Memory problems
What symptoms would you get from a:
TACS – Total anterior circulation stroke ?
(There are THREE clinical features)
- Unilateral weakness (and/or sensory deficit) of the face, arm and leg
- Homonymous hemianopia
- Higher cerebral dysfunction (e.g dysphasia, visuospatial disorder)
What symptoms would you get from a:
PACS – Partial anterior circulation stroke ?
(TWO out of three must be present)
- Unilateral weakness (and/or sensory deficit) of the face, arm and leg
- Homonymous hemianopia
- Higher cerebral dysfunction ( e.g dysphasia, visuospatial disorder)
What symptoms would you get from a:
POCS – Posterior circulation stroke ?
(ONE of the following must be present)
- Cranial nerve palsy and a contralateral motor/sensory deficit
- Bilateral motor/sensory deficit
- Cerebellar dysfunction (e.g. vertigo, nystagmus, ataxia)
- Isolated homonymous hemianopia
- Eye movement disorder (e.g. horizontal gaze palsy)
What symptoms would you get from a:
LACS – Lacunar stroke (deep penetrating arteries) ?
(ONE of the following must be present)
- Pure sensory stroke
- Pure motor stroke
- Senori-motor stroke
- Ataxic hemiparesis
What is the time frame in which a person must present to hospital to ensure they are able to receive thrombolysis for an Ischemic stroke?
4 hours
Where does most of the motor information originate in the brain?
Motor Cortex in the Frontal Lobe
What is the main descending pathway?
The Cortico-spinal Tract
How does a motor pathway create movement?
Descending motor (efferent) signals are sent from the brain to lower motor neurones which innervate muscles to create movement
