Trauma Score Calculator (Revised)

How to Use Trauma Score Calculator (Revised)

The Trauma Score Calculator (Revised) focuses on how to convert GCS, systolic blood pressure, and respiratory rate into the weighted RTS value. Follow these steps:

1. Enter the raw GCS score from 3 to 15
2. Enter systolic blood pressure and respiratory rate
3. The calculator converts each raw input to a coded RTS value from 0 to 4
4. Read the weighted RTS score; lower values indicate greater physiologic derangement

Formula & Theory — Trauma Score Calculator (Revised)

The Trauma Score Calculator (Revised) uses the following calculation logic:

RTS = 0.9368 × coded GCS + 0.7326 × coded SBP + 0.2908 × coded RR

Coded GCS:
13–15 = 4, 9–12 = 3, 6–8 = 2, 4–5 = 1, 3 = 0

Coded SBP:
>89 = 4, 76–89 = 3, 50–75 = 2, 1–49 = 1, 0 = 0

Coded RR:
10–29 = 4, >29 = 3, 6–9 = 2, 1–5 = 1, 0 = 0

The revised trauma score weights neurologic status most heavily, followed by perfusion and ventilation. It uses coded categories because trauma physiology is usually interpreted in severity bands rather than as a direct linear relationship with raw measurements.

Use Cases for Trauma Score Calculator (Revised)

The Trauma Score Calculator (Revised) is most useful in these situations:

• Prehospital trauma education and EMS documentation review.
• Showing how a drop in GCS can lower RTS more than a small respiratory change.
• Comparing physiologic severity between trauma scenarios.