Emergency · LIVE

Revised Trauma Score (Champion 1989)

RTS

Compute Champion 1989 coded GCS, SBP, and respiratory-rate values, the triage T-RTS sum, and the weighted RTS used for outcome evaluation.

LIVE $0.005 USDC GET /api/calc/rts

Markdown: /docs/rts.md · Canonical: https://magentlab.com/docs/rts

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

Compute Champion 1989 coded GCS, SBP, and respiratory-rate values, the triage T-RTS sum, and the weighted RTS used for outcome evaluation.

When to use

When an agent needs the published Revised Trauma Score (T-RTS and weighted RTS) and must not invent ISS, NISS, or the 1981 Trauma Score with capillary refill.

When not to use

• Not a triage order or a diagnosis. magent does not examine the patient.
• GCS is a caller-supplied total 3-15 on the 1976 motor-6 scale used by Champion 1989; magent does not score eye/verbal/motor here.
• This is Champion 1989 only. It does not implement the 1981 Trauma Score (capillary refill and respiratory expansion).

Formula

T-RTS = coded_gcs + coded_sbp + coded_rr (each 0-4); RTS = 0.9368*coded_gcs + 0.7326*coded_sbp + 0.2908*coded_rr

Citation

Title

A revision of the Trauma Score

Authors

Champion HR, Sacco WJ, Copes WS, Gann DS, Gennarelli TA, Flanagan ME

Source

J Trauma. 1989;29(5):623-629

DOI

10.1097/00005373-198905000-00017

Worked example

Also searched as

• revised trauma score
• T-RTS
• Champion RTS
• trauma score 1989
• weighted RTS
• physiologic trauma score

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/rts?gcs=15&systolic_mm_hg=120&respiratory_rate=16

Full URL: https://api.magentlab.com/api/calc/rts?gcs=15&systolic_mm_hg=120&respiratory_rate=16

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/rts?gcs=15&systolic_mm_hg=120&respiratory_rate=16"

Parameters

Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

POST /api/calc/rts Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 PREVIEW

• 1 to 25 items. Each item uses the same keys as the GET query parameters.
• POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
• The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
• HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
• Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
• x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request (fixture)

{
  "items": [
    {
      "gcs": "15",
      "respiratory_rate": "16",
      "systolic_mm_hg": "120"
    },
    {
      "gcs": "15",
      "respiratory_rate": "16",
      "systolic_mm_hg": "120"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/rts",
  "items": [
    {
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Champion HR, Sacco WJ, Copes WS, Gann DS, Gennarelli TA, Flanagan ME",
        "doi": "10.1097/00005373-198905000-00017",
        "id": "champion-1989",
        "source": "J Trauma. 1989;29(5):623-629",
        "title": "A revision of the Trauma Score"
      },
      "formula": "rts",
      "formula_expression": "T-RTS = coded_gcs + coded_sbp + coded_rr (each 0-4); RTS = 0.9368*coded_gcs + 0.7326*coded_sbp + 0.2908*coded_rr",
      "systolic_mm_hg": 120,
      "gcs": 15,
      "respiratory_rate": 16,
      "coded_gcs": 4,
      "coded_rr": 4,
      "coded_sbp": 4,
      "rts": 7.8408,
      "t_rts": 12
    },
    {
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Champion HR, Sacco WJ, Copes WS, Gann DS, Gennarelli TA, Flanagan ME",
        "doi": "10.1097/00005373-198905000-00017",
        "id": "champion-1989",
        "source": "J Trauma. 1989;29(5):623-629",
        "title": "A revision of the Trauma Score"
      },
      "formula": "rts",
      "formula_expression": "T-RTS = coded_gcs + coded_sbp + coded_rr (each 0-4); RTS = 0.9368*coded_gcs + 0.7326*coded_sbp + 0.2908*coded_rr",
      "systolic_mm_hg": 120,
      "gcs": 15,
      "respiratory_rate": 16,
      "coded_gcs": 4,
      "coded_rr": 4,
      "coded_sbp": 4,
      "rts": 7.8408,
      "t_rts": 12
    }
  ]
}

Response

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "citation": {
    "authors": "Champion HR, Sacco WJ, Copes WS, Gann DS, Gennarelli TA, Flanagan ME",
    "doi": "10.1097/00005373-198905000-00017",
    "id": "champion-1989",
    "source": "J Trauma. 1989;29(5):623-629",
    "title": "A revision of the Trauma Score"
  },
  "formula": "rts",
  "formula_expression": "T-RTS = coded_gcs + coded_sbp + coded_rr (each 0-4); RTS = 0.9368*coded_gcs + 0.7326*coded_sbp + 0.2908*coded_rr",
  "systolic_mm_hg": 120,
  "gcs": 15,
  "respiratory_rate": 16,
  "coded_gcs": 4,
  "coded_rr": 4,
  "coded_sbp": 4,
  "rts": 7.8408,
  "t_rts": 12
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

Related tools

• ISS — Compute the Baker 1974 Injury Severity Score as the sum of squares of the three highest caller-assigned AIS body-region grades, or 75 if any region is AIS 6.
• Glasgow Coma Scale — Compute the Glasgow Coma Scale as the sum of caller-assigned eye, verbal, and motor integers. The 1974 or 1976 edition is required.

Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /docs/mcp.

Guarantees

• HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged.
• exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
• HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
• Execution is timeout-bounded and concurrency-capped.
• Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.