NIH Stroke Scale and Visual System Week 8
(Latest 2023 - 2024) Actual Questions and Answers 100% Correct
- What is the NIH Stroke Scale?
Answer: Evaluates the effects of an acute cerebral infarction on the levels of
consciousness, language, neglect, visual-field loss, extraocular movement, motor strength, ataxia, dysarthria, and sensory loss
The lower the score, the less impaired the patient: 0=normal Takes 10-15 minutes to administer
- What was the stroke scale originally used for?
Answer: Originally developed as a research tool to evaluate initial neurological stroke symptoms for clinical trials - still widely used in stroke research
- Where is it primarily used?
- Evaluate the severity of stroke symptoms
- Determine treatment options
- Predict outcomes
Answer: Used primarily in the acute care setting to:
- What does the stroke scale measure?
Answer:
1a. Level of Consciousness (0-3) 1b. LOC Questions (0-2) 1c. LOC Commands (0-2)
- Best Gaze (0-2)
- Visual (0-3)
- Facial Palsy (0-3)
- Motor Arm (0-4 or UN for each arm
- Motor Leg (0-4 or UN for each leg)
- Limb Ataxia (0-2 or UN for each limb) 1 / 2
- Sensory (0-2)
- Best Language (0-3)
- Dysarthria (0-3 or UN)
- Extinction and Inattention (0-2)
- No stroke symptoms
Answer: 0
- Minor Stroke
Answer: 1-4
- Moderate Stroke
Answer: 5-15
- Moderate-Severe Stroke
Answer: 16-20
- Severe Stroke
Answer: 21-42
- Four phases of visual perception
Answer:
- Refraction of light rays by lens & cornea
- Conversion of light electromagnetic energy by retinal photoreceptor cells
- Transmission of impulses from retinal photoreceptors to visual cortex
- Perception of images in the visual cortex
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