Wilson Risk Sum Score (difficult intubation)
Wilson Risk Sum Score (0–10) for difficult intubation: body weight, head/neck movement, jaw movement, receding mandible, and buck teeth each scored 0–2; ≥ 2 is the common sensitive screen.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Body weight
- 2
- Head and neck movement
- 0
- Jaw movement
- 0
- Receding mandible
- 0
- Buck teeth
- 0
Result: Wilson Risk Sum 2/10: at the 2-point level — at or above the common sensitive screen (the derivation optimum was a score above 2).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Threshold
- a score above 2 identified ~75% of difficult intubations (12% false positive) in the derivation; a distinct anatomic index from El-Ganzouri.
What you enter
- Body weight (0–2)
- Head and neck movement (0–2)
- Jaw movement (0–2)
- Receding mandible (0–2)
- Buck teeth (0–2)
How this is calculated
- Factors
- body weight, head/neck movement, jaw movement, receding mandible, and buck teeth — each 0/1/2, summing 0–10.
Wilson ME, Spiegelhalter D, Robertson JA, Lesser P. Predicting difficult intubation. Br J Anaesth. 1988;61(2):211-216. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.