Free · Historical clinical scores

Weighted Revised Trauma Score

Combine the captured Glasgow Coma Scale, systolic pressure and breathing-rate categories using the historical weighted RTS coefficients.

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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.

Formula and method

GCS 13–15, systolic pressure above 89 mmHg and respiratory rate 10–29/min each receive code 4, giving weighted RTS 7.8408.

Weighted RTS = 0.9368 × GCS code + 0.7326 × systolic-pressure code + 0.2908 × respiratory-rate code.

Worked example

Enter these known values and leave the other values blank.

Glasgow Coma Scale
15-13 pts
Systolic Blood Pressure
>89 mmHg
Respiratory Rate
10-29 /min
Revised Trauma Score
7.841

Assumptions and limitations

  • Use the recorded category labels, not raw vital-sign numbers in the weighted sum. Each component uses a code from 0 to 4. Glasgow Coma Scale groups are 13–15, 9–12, 6–8, 4–5 and 3; the pressure and respiratory selectors preserve the original category boundaries.
  • This is the historical weighted RTS, range 0–7.8408. It differs from unweighted triage RTS, range 0–12, and from the newer NTS. Do not interpret this value as a survival probability or a treatment instruction.
  • The original clinical score uses assessments in trauma settings. GCS and vital-sign measurement context, intervention, sedation and injury characteristics affect interpretation; this arithmetic cannot replace trauma assessment.

Common questions

Why is the maximum not 12?

The weighted RTS multiplies each 0–4 code by a different coefficient; the three coefficients sum to 1.9602, so the maximum is 4 × 1.9602 = 7.8408.

Should I enter an actual systolic pressure as a score?

Choose the pressure range containing the observed measurement. The calculation uses its historical code, not the raw mmHg value.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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