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NIH Stroke Scale (ext.)

NIH Stroke Scale (ext.): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

β„Ή Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

NIH Stroke Scale (ext.)

1a. Level of consciousness (0–3)
1b. LOC questions (0–2)
1c. LOC commands (0–2)
2. Best gaze (0–2)
3. Visual fields (0–3)
4. Facial palsy (0–3)
5a. Left arm motor (0–4)
5b. Right arm motor (0–4)
6a. Left leg motor (0–4)
6b. Right leg motor (0–4)
7. Limb ataxia (0–2)
8. Sensory (0–2)
9. Best language, aphasia (0–3)
10. Dysarthria (0–2)
11. Extinction and inattention (0–2)
NIHSS total score
3
Untestable items (amputation, intubation) are not added to the totalMaximum 42 pointsNIH Stroke Scale (ext.): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Stroke severity
Minor

More about: NIH Stroke Scale (ext.)

What it calculates

The β€œNIH Stroke Scale (ext.)” calculator computes NIHSS total score from 15 parameters: 1a. level of consciousness (0–3), 1b. loc questions (0–2), 1c. loc commands (0–2), 2. best gaze (0–2), 3. visual fields (0–3), 4. facial palsy (0–3), 5a. left arm motor (0–4), 5b. right arm motor (0–4), 6a. left leg motor (0–4), 6b. right leg motor (0–4), 7. limb ataxia (0–2), 8. sensory (0–2), 9. best language, aphasia (0–3), 10. dysarthria (0–2), 11. extinction and inattention (0–2).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters 1a. Level of consciousness (0–3) = 0, 1b. LOC questions (0–2) = 0, 1c. LOC commands (0–2) = 0, 2. Best gaze (0–2) = 0, 3. Visual fields (0–3) = 0, 4. Facial palsy (0–3) = 1, 5a. Left arm motor (0–4) = 1, 5b. Right arm motor (0–4) = 0, 6a. Left leg motor (0–4) = 1, 6b. Right leg motor (0–4) = 0, 7. Limb ataxia (0–2) = 0, 8. Sensory (0–2) = 0, 9. Best language, aphasia (0–3) = 0, 10. Dysarthria (0–2) = 0, 11. Extinction and inattention (0–2) = 0 the result is 3 (Untestable items (amputation, intubation) are not added to the total).

How to use

  1. Enter 1a. level of consciousness (0–3), 1b. loc questions (0–2), 1c. loc commands (0–2), 2. best gaze (0–2), 3. visual fields (0–3), 4. facial palsy (0–3), 5a. left arm motor (0–4), 5b. right arm motor (0–4), 6a. left leg motor (0–4), 6b. right leg motor (0–4), 7. limb ataxia (0–2), 8. sensory (0–2), 9. best language, aphasia (0–3), 10. dysarthria (0–2) and 11. extinction and inattention (0–2) β€” each field above is adjustable with a slider.
  2. NIHSS total score is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)Β². Example: 70 kg / (1.75 m)Β² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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