Revised Trauma Score Calculator - Champion 1989 Weighted Tally

The revised trauma score is a bedside physiologic scoring system that turns the first adult trauma vitals (Glasgow Coma Scale, systolic blood pressure, and respiratory rate) into a 0 to 7.8408 weighted total paired with a published survival probability. Each vital is coded 0 to 4 using the 1989 Champion cutoffs, weighted by 0.9368 (GCS), 0.7326 (SBP), and 0.2908 (RR), and summed. The total drives trauma-center triage and supports TRISS.

• • Field triage by emergency medical services: A prehospital team choosing between the nearest hospital and a designated trauma centre in the first 15 minutes.
• • Emergency department primary survey review: A trauma team running the primary survey who wants a structured physiologic summary alongside the mechanism and anatomic findings.
• • TRISS survival probability calculation: A registrar building a TRISS entry who needs the physiologic RTS, the ISS, and the patient's age.

The RTS replaced the 1981 Champion Trauma Score in 1989. The original used five variables and a 1 to 16 integer total; the revised version kept the three most predictive variables and used regression weights so the total could combine with the ISS in TRISS.

The calculator mirrors the published three-variable layout: read each vital, code 0 to 4, weight, sum, then read the total against the survival table and the trauma-center threshold of 4.

When the trauma patient reaches the intensive care unit and the team needs a 12-variable physiologic severity score that also reads the Glasgow Coma Scale, Apache II Calculator supports the APS-plus-age-plus-chronic-health total that often runs in parallel to the RTS review.

The calculator reads the three vitals, codes each 0 to 4 using the published cutoffs, multiplies by the 1989 Champion regression weights, and returns the 0 to 7.8408 weighted total, the closest published survival probability, and the trauma-center flag.

• GCS_code (0-4): 13-15 = 4, 9-12 = 3, 6-8 = 2, 4-5 = 1, 3 = 0.
• SBP_code (0-4): greater than 89 = 4, 76-89 = 3, 50-75 = 2, 1-49 = 1, 0 = 0.
• RR_code (0-4): 10-29 = 4, greater than 29 = 3, 6-9 = 2, 1-5 = 1, 0 = 0.

The 0.9368 weight on the Glasgow Coma Scale is the largest of the three and reflects the heavy influence of head injury on outcome. The 0.7326 weight on SBP reflects the strong tie between hypotension and mortality, and the 0.2908 weight on RR captures the contribution of abnormal breathing patterns.

According to Champion et al. (Journal of Trauma, 1989), RTS codes GCS, systolic blood pressure, and respiratory rate into 0 to 4 sub-scores and applies weights 0.9368, 0.7326, and 0.2908 to give a 0 to 7.8408 weighted total that predicts survival in adult trauma patients.

According to Champion et al. (Critical Care Medicine, 1981), the original Trauma Score published the survival table mapping weighted bands to 2.7, 7.1, 17.2, 36.1, 60.5, 80.7, 91.9, 96.9, and 98.8 percent; the 1989 revision reused the same integer banding.

When the trauma patient is in shock and the team reads the first arterial or venous blood gas alongside the RTS, Anion Gap Calculator supports the serum and albumin-corrected gap with the published 8 to 12 mEq per liter bands that flag a lactic or other unmeasured acid contribution in the same resuscitation note.

Four ideas drive how the revised trauma score is read at the bedside and inside the TRISS model.

The 1989 Champion paper dropped the 1981 Trauma Score's capillary refill and respiratory expansion variables because they were subjective. The remaining GCS, SBP, and RR are objective, routinely charted, and easy to record in the field.

The 0 to 7.8408 maximum is reached only when all three vitals are at the 4-point ceiling; in real trauma cohorts the median first revised trauma score sits closer to 7 because patients usually arrive with at least one abnormal vital.

When the trauma workup raises a question of pulmonary embolism alongside the physiologic review and the team wants a parallel pretest probability tool, Revised Geneva Score Calculator supports the eight-item clinical tally that pairs naturally with the RTS in the same shift.

Treat the calculator as a structured primary-survey summary. Read the three vitals, run the code, and record the weighted total and the trauma-center flag for the chart note.

1. 1 Record the first GCS total: Document the eye, verbal, and motor components and total them. Use the post-resuscitation GCS if the patient was intubated in the field, and note the time.
2. 2 Record the first systolic blood pressure: Use the first palpated or cuffed systolic reading, not the mean arterial pressure. Re-check with a manual cuff if the automated reading is inconsistent.
3. 3 Record the first respiratory rate: Count chest rise over 30 seconds and double it, or read the capnography trace; avoid a transport-monitor rate that has not been re-checked.
4. 4 Enter the three values and read the weighted total: Enter GCS, SBP, and respiratory rate. The calculator returns the coded sub-scores, the 0 to 7.8408 weighted total, the survival probability, and the trauma-center flag at or below 4.
5. 5 Pair the total with the anatomic injury review: Document the ISS, the body regions injured, and the patient's age so the TRISS survival probability can be calculated in parallel; the RTS alone does not capture mechanism, anatomy, or age.

A practical use: a 28-year-old motorcyclist arrives with GCS 11, SBP 95 mmHg, and respiratory rate 24 per minute. GCS_code = 3, SBP_code = 4, RR_code = 4. The weighted total is 6.904, the survival probability is about 91.9 percent, and the trauma-center flag is off even though the GCS alone is concerning.

When a trauma patient who went to the operating room is breathing spontaneously in the PACU and the team needs a structured 0 to 10 recovery score before step-down, Aldrete Score Calculator supports the modified five-criterion total that the PACU nurse and the trauma team both quote in the chart note.

An RTS can be tallied on paper, but a calculator keeps the codes and weights consistent and easier to defend in a trauma review.

• • Standardised coding across providers: Paramedics, emergency physicians, trauma surgeons, and registrars all use the same three-vital coding table, so the discussion is less dependent on memory of the 1989 paper.
• • Transparent record-keeping: Each coded sub-score and weighted total can be quoted in the chart note, so a reviewer can challenge the inputs and the trauma-center flag.
• • Quick link to the published survival table: The calculator ties the total to the Champion 1981/1989 survival probabilities (about 2.7, 7.1, 17.2, 36.1, 60.5, 80.7, 91.9, 96.9, and 98.8 percent), so the user does not look up the numbers.
• • Pairs naturally with the ISS in TRISS: The weighted RTS feeds directly into the TRISS survival model alongside the ISS and age, so the result can be reused in audit.

The revised trauma score was designed to be calculable at the bedside from the first vitals; the calculator keeps that goal front and centre but does not replace the primary survey or the surgical decisions that follow.

When the trauma team activates a massive transfusion protocol and the blood bank asks for the FFP volume and bag count from the patient's weight, Fresh Frozen Plasma Dose Calculator supports the mL per kilogram and bag tally that the blood bank and trauma team quote in the same activation note.

Several things can move the weighted total up or down, and several things the score does not capture at all.

• • The revised trauma score is a physiologic severity tool, not a diagnostic test. It does not capture mechanism of injury, anatomic severity, comorbidities, anticoagulant use, pregnancy, or age.
• • Inter-rater agreement on the GCS sub-score is moderate, particularly in intubated and sedated patients. The calculator surfaces the coded sub-scores so a reviewer can challenge the GCS band separately.

Trauma-center capacity, transfer time, and anticoagulation status matter for what to do with the trauma-center flag, but they are not part of the scoring tool; pair the revised trauma score with the ISS and age before the final triage decision.

According to Champion et al. (Journal of Trauma, 1989), the RTS uses the published GCS, SBP, and RR bands and reads the weighted total against the trauma-center referral threshold of 4.

When the trauma workup moves to a contrast-enhanced CT for aortic, abdominal, or pelvic injury and the team needs a kidney-function read before the contrast load, GFR Calculator supports the eGFR estimate that the radiology and trauma teams both reference in the imaging decision.