Question

The Trauma and Injury Severity Score (TRISS) includes:

• A. GCS + BP + RR
• B. RTS + ISS + Age
• C. RTS + ISS + GCS
• D. RTS + GCS + BP

Hint:

One physiological score, one anatomical score, and a patient factor that worsens with years.

Answer 1

The Correct Option is B

Step 1: TRISS is a method used to predict the probability of survival after trauma by combining a physiological measure of injury, an anatomical measure of injury, and the patient's age.
Step 2: The physiological component is the Revised Trauma Score (RTS), which itself is built from the Glasgow Coma Scale, systolic blood pressure, and respiratory rate.
Step 3: The anatomical component is the Injury Severity Score (ISS), derived from the Abbreviated Injury Scale for the three most severely injured body regions.
Step 4: The third component is patient age, which adjusts the estimate because survival worsens with increasing age for the same injury. So TRISS = RTS + ISS + Age.
Step 5: Options C and D wrongly add GCS or BP separately; those values are already captured inside the RTS, so they are not listed as independent TRISS inputs. Option A lists only physiological variables and omits the anatomical score and age.
Answer: B. RTS + ISS + Age.