II. Epidemiology
- Most common Ischemic Stroke territory, accounting for up to 90% of Ischemic Strokes
III. Findings: Symptoms and Signs
- May be associated with rapid progression in Decreased Level of Consciousness
- Contralateral Hemiparesis or Hemiplegia (motor weakness)
- Contralateral hemisensory disturbance
- Sensory deficit of head (spares forehead) and arm, and to a lesser extent leg
- Aphasia occurs with left MCA lesion (dominant hemisphere)
- Hemineglect occurs with a right MCA lesion (non-dominant hemisphere)
- Denial or lack of recognition of paralyzed extremity
- May be associated with eye changes
- Conjugate Eye Deviation towards the Brain Lesion
- Eyes look toward lesion (contrast with Seizure, in which eyes look away from the lesion)
- Inability to turn eyes toward the affected side
- Contralateral homonymous Hemianopsia (blindness in same Visual Field of each eye)
- Conjugate Eye Deviation towards the Brain Lesion
IV. References
- (2019) Neuro-Psych, CCME National Board Review Course, accessed 6/7/2019