Revised Trauma Score Calculator: Vital Signs Turned Into a Real Triage Number
Three vital signs, one standardized score. Enter Glasgow Coma Scale, systolic blood pressure, and respiratory rate, and get both the quick triage figure and the weighted score used in outcome research.
Score each category based on the patient's best observed response, then the total GCS feeds into the RTS calculation automatically.
Coded value breakdown
Why Three Vital Signs Tell a Surprisingly Complete Story
You might expect a serious injury assessment to require a long list of measurements, but the Revised Trauma Score deliberately keeps things to three, Glasgow Coma Scale, systolic blood pressure, and respiratory rate, because together they capture the three systems that fail first and most predictably after major trauma, the brain, the circulatory system, and breathing. That focus is exactly what makes RTS fast enough for field use while still carrying real predictive weight in outcome research.
"The Revised Trauma Score was developed to improve upon earlier trauma scoring systems by incorporating coded values for Glasgow Coma Scale, systolic blood pressure, and respiratory rate, producing a physiologic score with demonstrated correlation to patient survival outcomes." Reflects the original methodology described by Champion and colleagues in the development of the Revised Trauma Score
Triage RTS Versus Weighted RTS, and Why Both Exist
Triage RTS is the fast version, each of the three vital signs gets coded from 0 to 4, and those three numbers are simply added for a score between 0 and 12. It's built for speed, useful in the field when seconds matter and a rough severity read is more valuable than statistical precision. Weighted RTS takes the same three coded values but multiplies each by a specific coefficient before summing, producing a more statistically refined figure between 0 and 7.8408 that correlates more tightly with actual survival probability. This calculator gives you both, since which one matters more depends entirely on whether you're triaging in real time or working through research and outcome analysis.
How the Coding Actually Works
Each vital sign gets translated into a coded value from 0 to 4 based on standardized ranges, a Glasgow Coma Scale of 13 to 15 codes as a 4, while a GCS of 3 codes as a 0, and blood pressure and respiratory rate follow their own similarly structured bands. This coding step matters because it puts three completely different units, a coma scale, a blood pressure reading, and a breathing rate, onto the same 0 to 4 scale so they can be meaningfully combined into one number.
| GCS Total | Coded Value | Systolic BP (mmHg) | Coded Value | Resp Rate (breaths/min) | Coded Value |
|---|---|---|---|---|---|
| 13–15 | 4 | >89 | 4 | 10–29 | 4 |
| 9–12 | 3 | 76–89 | 3 | >29 | 3 |
| 6–8 | 2 | 50–75 | 2 | 6–9 | 2 |
| 4–5 | 1 | 1–49 | 1 | 1–5 | 1 |
| 3 | 0 | 0 | 0 | 0 | 0 |
Reading Your Result in Context
A Triage RTS of 12 reflects normal findings across all three measures, while lower scores flag increasing physiologic compromise. In research and hospital settings, RTS is frequently paired with the Injury Severity Score and patient age in a combined model called TRISS to estimate survival probability more completely than any single score alone. This calculator focuses specifically on RTS itself, giving you a clean, standardized number you can then bring into whatever broader assessment framework applies to your setting.
Standards and Reference Points Behind This Tool
| Reference | How it's used here |
|---|---|
| ISO 8601 | Dates on this page follow the YYYY-MM-DD format for clarity across regions |
| Glasgow Coma Scale | Used in full, standard 3 to 15 point form as the neurological input to the RTS formula |
| WCAG 2.1 AA | Color contrast, keyboard navigation, and readable text sizing were kept in mind throughout |
"Physiologic trauma scores such as RTS remain valuable triage and research tools precisely because they rely on readily measurable vital signs rather than imaging or laboratory results, allowing rapid assessment in prehospital and emergency department settings." Reflects general principles widely taught in emergency medicine and trauma triage education
Frequently Asked Questions
What is the Revised Trauma Score used for?
It's a physiologic scoring tool combining Glasgow Coma Scale, systolic blood pressure, and respiratory rate, used for rapid field triage and in research to help predict survival probability after major trauma.
What's the difference between Triage RTS and weighted RTS?
Triage RTS simply adds the three coded values for a fast field score from 0 to 12, while weighted RTS applies statistical coefficients to each value for a more precise research oriented figure between 0 and 7.8408.
Can this calculator diagnose the severity of my injury?
No, it calculates a standardized score from vital signs you provide, but it doesn't replace clinical evaluation by trained medical or emergency personnel.
Is the Revised Trauma Score still used today?
Yes, it remains widely referenced in triage protocols and trauma research, often combined with other tools like the Injury Severity Score in models such as TRISS.