Pediatric Trauma Score (PTS)

PTS

Compute the Tepas 1987 Pediatric Trauma Score from caller-assigned weight, airway, systolic BP, CNS, skeletal, and wound grades.

LIVE $0.005 USDC GET /api/calc/pts

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

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

What it computes

Compute the Tepas 1987 Pediatric Trauma Score from caller-assigned weight, airway, systolic BP, CNS, skeletal, and wound grades.

When to use

When an agent needs the published Tepas 1987 six-item Pediatric Trauma Score and must not substitute ISS or RTS or treat the total as a triage order.

When not to use

Not a medical device and not a triage, trauma-activation, or transport order. magent does not examine the child.
Tepas 1987 Pediatric Trauma Score only. Not ISS, not RTS, and not a triage order of care.
Weight is the size item (>20 kg +2, 10–20 kg +1, <10 kg −1). Adult age is not required.
Airway, CNS, skeletal, and wound grades are caller-assigned tokens. magent does not inspect the airway or skeleton.
score_le_8 follows the paper's association of scores ≤8 with significant mortality and the need for trauma-center care. It is not a disposition.

Formula

PTS = weight_points + airway_points + sbp_points + cns_points + skeletal_points + wound_points; Tepas 1987; each +2/+1/−1; total −6 to +12

Citation

Title: The pediatric trauma score as a predictor of injury severity in the injured child
Authors: Tepas JJ, Mollitt DL, Talbert JL, Bryant M
Source: J Pediatr Surg. 1987;22(1):14-18
DOI: 10.1016/s0022-3468(87)80006-4

Worked example

All +2 grades, score 12

Given: airway=normalcns=awakeskeletal=nonesystolic_mm_hg=100weight_kg=25wound=none

Weight 25 kg → +2; airway normal → +2; SBP 100 → +2; CNS awake → +2; skeletal none → +2; wound none → +2
Score = 12 (max 12); score_le_8 = false

All +1 grades, score 6

Given: airway=maintainablecns=obtundedskeletal=closedsystolic_mm_hg=70weight_kg=15wound=minor

Weight 15 kg → +1; airway maintainable → +1; SBP 70 → +1; CNS obtunded → +1; skeletal closed → +1; wound minor → +1
Score = 6 (min −6, max 12); score_le_8 = true

Also searched as

pediatric trauma score
PTS trauma
Tepas PTS
paediatric trauma score
Tepas 1987
pediatric trauma
child trauma score

Try

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

/api/calc/pts?weight_kg=25&airway=normal&systolic_mm_hg=100&cns=awake&skeletal=none&wound=none

Full URL: https://api.magentlab.com/api/calc/pts?weight_kg=25&airway=normal&systolic_mm_hg=100&cns=awake&skeletal=none&wound=none

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/pts?weight_kg=25&airway=normal&systolic_mm_hg=100&cns=awake&skeletal=none&wound=none"

Parameters

Name	Type	Required	Description
`weight_kg`	number	optional	Weight in kilograms (1-500), the Tepas 1987 size item. Provide weight_kg or weight_lb. >20 → +2; 10-20 inclusive → +1; <10 → −1.
`weight_lb`	number	optional	Weight in pounds (2-1100). Converted as kg = lb * 0.45359237.
`airway`	string	required · normal, maintainable, unmaintainable	Caller-assigned airway (normal, maintainable, or unmaintainable). Tepas 1987: normal → +2, maintainable → +1, unmaintainable → −1. magent does not examine the airway.
`systolic_mm_hg`	integer	required	Systolic blood pressure in mm Hg (integer 0-300). Tepas 1987: >90 → +2; 50-90 inclusive → +1; <50 → −1. 0 is a published −1 band.
`cns`	string	required · awake, obtunded, coma	Caller-assigned CNS (awake, obtunded, or coma). Tepas 1987: awake → +2, obtunded → +1, coma → −1. magent does not examine the child.
`skeletal`	string	required · none, closed, open_or_multiple	Caller-assigned skeletal injury (none, closed, or open_or_multiple). Tepas 1987: none → +2, closed → +1, open_or_multiple → −1. magent does not assign fractures.
`wound`	string	required · none, minor, major	Caller-assigned cutaneous wound (none, minor, or major). Tepas 1987: none → +2, minor → +1, major → −1. magent does not inspect wounds.

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/pts 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": [
    {
      "airway": "normal",
      "cns": "awake",
      "skeletal": "none",
      "systolic_mm_hg": "100",
      "weight_kg": "25",
      "wound": "none"
    },
    {
      "airway": "normal",
      "cns": "awake",
      "skeletal": "none",
      "systolic_mm_hg": "100",
      "weight_kg": "25",
      "wound": "none"
    }
  ]
}

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/pts",
  "items": [
    {
      "components": [
        {
          "value": 25.0,
          "factor": "weight_kg",
          "points": 2,
          "present": true
        },
        {
          "value": "normal",
          "factor": "airway",
          "points": 2,
          "present": true
        },
        {
          "value": 100,
          "factor": "systolic_mm_hg",
          "points": 2,
          "present": true
        },
        {
          "value": "awake",
          "factor": "cns",
          "points": 2,
          "present": true
        },
        {
          "value": "none",
          "factor": "skeletal",
          "points": 2,
          "present": true
        },
        {
          "value": "none",
          "factor": "wound",
          "points": 2,
          "present": true
        }
      ],
      "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": "Tepas JJ, Mollitt DL, Talbert JL, Bryant M",
        "doi": "10.1016/s0022-3468(87)80006-4",
        "id": "tepas-1987",
        "pmid": "3102714",
        "source": "J Pediatr Surg. 1987;22(1):14-18",
        "title": "The pediatric trauma score as a predictor of injury severity in the injured child"
      },
      "formula": "pts",
      "formula_expression": "PTS = weight_points + airway_points + sbp_points + cns_points + skeletal_points + wound_points; Tepas 1987; each +2/+1/−1; total −6 to +12",
      "systolic_mm_hg": 100,
      "max_score": 12,
      "score": 12,
      "weight_kg": 25.0,
      "min_score": -6,
      "airway": "normal",
      "cns": "awake",
      "score_le_8": false,
      "skeletal": "none",
      "wound": "none"
    },
    {
      "components": [
        {
          "value": 25.0,
          "factor": "weight_kg",
          "points": 2,
          "present": true
        },
        {
          "value": "normal",
          "factor": "airway",
          "points": 2,
          "present": true
        },
        {
          "value": 100,
          "factor": "systolic_mm_hg",
          "points": 2,
          "present": true
        },
        {
          "value": "awake",
          "factor": "cns",
          "points": 2,
          "present": true
        },
        {
          "value": "none",
          "factor": "skeletal",
          "points": 2,
          "present": true
        },
        {
          "value": "none",
          "factor": "wound",
          "points": 2,
          "present": true
        }
      ],
      "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": "Tepas JJ, Mollitt DL, Talbert JL, Bryant M",
        "doi": "10.1016/s0022-3468(87)80006-4",
        "id": "tepas-1987",
        "pmid": "3102714",
        "source": "J Pediatr Surg. 1987;22(1):14-18",
        "title": "The pediatric trauma score as a predictor of injury severity in the injured child"
      },
      "formula": "pts",
      "formula_expression": "PTS = weight_points + airway_points + sbp_points + cns_points + skeletal_points + wound_points; Tepas 1987; each +2/+1/−1; total −6 to +12",
      "systolic_mm_hg": 100,
      "max_score": 12,
      "score": 12,
      "weight_kg": 25.0,
      "min_score": -6,
      "airway": "normal",
      "cns": "awake",
      "score_le_8": false,
      "skeletal": "none",
      "wound": "none"
    }
  ]
}

Response

Field	Type	Description
`formula`	string	pts
`formula_expression`	string	Exact expression used
`score`	integer	PTS total −6 to +12 (higher is better)
`max_score`	integer	Always 12
`min_score`	integer	Always −6
`score_le_8`	boolean	true when score is ≤8. Tepas 1987 associated scores ≤8 with significant mortality and the need for trauma-center care. Not a triage order.
`weight_kg`	number	Normalized weight in kg
`airway`	string	Caller-assigned airway used
`systolic_mm_hg`	integer	Systolic BP used, mm Hg
`cns`	string	Caller-assigned CNS used
`skeletal`	string	Caller-assigned skeletal grade used
`wound`	string	Caller-assigned wound grade used
`components`	array	Per-item points (always present)
`citation`	object	Tepas 1987 J Pediatr Surg citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 25.0,
      "factor": "weight_kg",
      "points": 2,
      "present": true
    },
    {
      "value": "normal",
      "factor": "airway",
      "points": 2,
      "present": true
    },
    {
      "value": 100,
      "factor": "systolic_mm_hg",
      "points": 2,
      "present": true
    },
    {
      "value": "awake",
      "factor": "cns",
      "points": 2,
      "present": true
    },
    {
      "value": "none",
      "factor": "skeletal",
      "points": 2,
      "present": true
    },
    {
      "value": "none",
      "factor": "wound",
      "points": 2,
      "present": true
    }
  ],
  "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": "Tepas JJ, Mollitt DL, Talbert JL, Bryant M",
    "doi": "10.1016/s0022-3468(87)80006-4",
    "id": "tepas-1987",
    "pmid": "3102714",
    "source": "J Pediatr Surg. 1987;22(1):14-18",
    "title": "The pediatric trauma score as a predictor of injury severity in the injured child"
  },
  "formula": "pts",
  "formula_expression": "PTS = weight_points + airway_points + sbp_points + cns_points + skeletal_points + wound_points; Tepas 1987; each +2/+1/−1; total −6 to +12",
  "systolic_mm_hg": 100,
  "max_score": 12,
  "score": 12,
  "weight_kg": 25.0,
  "min_score": -6,
  "airway": "normal",
  "cns": "awake",
  "score_le_8": false,
  "skeletal": "none",
  "wound": "none"
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_weight`	weight_kg (1-500) or weight_lb (2-1100) is required Returned before settlement; you are not charged.
400	`invalid_pts_airway`	airway must be normal, maintainable, or unmaintainable (Tepas 1987 Pediatric Trauma Score). Returned before settlement; you are not charged.
400	`invalid_rts_systolic`	systolic_mm_hg must be an integer from 0 to 300. Returned before settlement; you are not charged.
400	`invalid_pts_cns`	cns must be awake, obtunded, or coma (Tepas 1987 Pediatric Trauma Score). Returned before settlement; you are not charged.
400	`invalid_pts_skeletal`	skeletal must be none, closed, or open_or_multiple (Tepas 1987 Pediatric Trauma Score). Returned before settlement; you are not charged.
400	`invalid_pts_wound`	wound must be none, minor, or major (Tepas 1987 Pediatric Trauma Score). Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

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.

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. HTTP 402 never includes the tool JSON.
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.