Trauma Score Calculator

Both start from the same three 0-4 coded values for GCS, systolic blood pressure, and respiratory rate, but they combine them differently for different purposes. The weighted RTS multiplies each code by a statistically derived coefficient and sums them (range 0 to 7.8408) for estimating survival probability, while the Triage RTS simply adds the three raw codes together with no weighting (range 0 to 12) so a first responder can compute it by hand in the field for rapid transport decisions.

A Triage RTS of 10 or below indicates the highest, immediate priority for transport to a designated trauma center. A T-RTS of 11 indicates delayed priority, and a T-RTS of 12 -- the maximum, meaning every component is at its best coded value -- indicates minimal injury. Because the scale only has 13 possible whole-number values (0 through 12), most injured patients with any physiologic derangement fall into the immediate-priority range.

No -- this calculator's survival probability uses a logistic model based on RTS alone. The full Trauma and Injury Severity Score (TRISS) methodology combines RTS with the Injury Severity Score (which requires detailed anatomic injury coding not entered here) and a patient's age into a more complete survival estimate. Treat this calculator's percentage as a simplified, RTS-only approximation, not a substitute for a complete TRISS calculation.

Coding each measurement into a 0-4 bucket compresses continuous vital signs (a GCS of 3-15, a blood pressure of any value, a respiratory rate of any value) into a small, comparable scale before combining them, the same way the original Trauma Score's designers intended. A patient with a GCS of 9 and a GCS of 12 both fall in the same coded bucket (3) even though the raw scores differ, because the RTS is designed around broad physiologic categories rather than fine-grained precision in any one measurement.