Emergency · LIVE

Cardiac Anesthesia Risk Evaluation (CARE)

CARE

Return the caller-assigned Cardiac Anesthesia Risk Evaluation (CARE) class 1-5 with optional emergency suffix E for classes 3-5 and Dupuis 2001 Table 4 mortality and morbidity percents.

LIVE $0.005 USDC GET /api/calc/care

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

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

What it computes

Return the caller-assigned Cardiac Anesthesia Risk Evaluation (CARE) class 1-5 with optional emergency suffix E for classes 3-5 and Dupuis 2001 Table 4 mortality and morbidity percents.

When to use

When an agent already has a Dupuis 2001 CARE class 1-5 and whether the case is an emergency requiring immediate surgery, and needs the canonical label (e.g. 1 or 3E). magent does not examine the patient or assign the class. Not an anesthetic plan and not Gupta MICA.

When not to use

• Not a medical device. Not an anesthetic plan or surgical booking.
• The caller assigns CARE class 1-5 and the emergency flag. magent does not examine the patient. Footnote definitions of controlled or uncontrolled medical problems and complex surgery in Dupuis 2001 Table 1 are not extra scored items.
• Emergency E applies only to classes 3-5 (Dupuis 2001). Class 1 or 2 with emergency true is rejected. Unstable conditions needing surgery within 24 h but not immediately are uncontrolled medical problems, not E.
• Mortality and morbidity percents are Dupuis 2001 Table 4 logistic-regression probabilities from the Ottawa Heart Institute reference population (n=2000), not individual prognosis. Not Parsonnet, EuroSCORE, or Gupta MICA.

Formula

Caller-assigned CARE class 1-5; append E when emergency is true for classes 3-5 only (Dupuis 2001). Emergency never applies to CARE 1 or 2.

Citation

Title

The cardiac anesthesia risk evaluation score: a clinically useful predictor of mortality and morbidity after cardiac surgery

Authors

Dupuis JY, Wang F, Nathan H, Lam M, Grimes S, Bourke M

Source

Anesthesiology. 2001;94(2):194-204

DOI

10.1097/00000542-200102000-00006

Worked example

Also searched as

• CARE score
• cardiac anesthesia risk evaluation
• Dupuis CARE
• CARE class
• CARE 3E 4E 5E
• cardiac surgery risk class
• CARE classification
• Ottawa CARE score

Try

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

/api/calc/care?care_class=1&emergency=false

Full URL: https://api.magentlab.com/api/calc/care?care_class=1&emergency=false

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/care?care_class=1&emergency=false"

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/care 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": [
    {
      "care_class": "1",
      "emergency": "false"
    },
    {
      "care_class": "1",
      "emergency": "false"
    }
  ]
}

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/care",
  "items": [
    {
      "description": "Patient with stable cardiac disease and no other medical problem. A noncomplex surgery is undertaken.",
      "emergency": false,
      "components": [
        {
          "value": 1,
          "factor": "care_class",
          "met": true
        },
        {
          "factor": "emergency",
          "met": false
        }
      ],
      "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": "Dupuis JY, Wang F, Nathan H, Lam M, Grimes S, Bourke M",
        "doi": "10.1097/00000542-200102000-00006",
        "id": "dupuis-2001",
        "pmid": "11176081",
        "source": "Anesthesiology. 2001;94(2):194-204",
        "title": "The cardiac anesthesia risk evaluation score: a clinically useful predictor of mortality and morbidity after cardiac surgery"
      },
      "formula": "care",
      "formula_expression": "Caller-assigned CARE class 1-5; append E when emergency is true for classes 3-5 only (Dupuis 2001). Emergency never applies to CARE 1 or 2.",
      "care_class": 1,
      "care_label": "1",
      "morbidity_percent": 5.4,
      "mortality_percent": 0.5
    },
    {
      "description": "Patient with stable cardiac disease and no other medical problem. A noncomplex surgery is undertaken.",
      "emergency": false,
      "components": [
        {
          "value": 1,
          "factor": "care_class",
          "met": true
        },
        {
          "factor": "emergency",
          "met": false
        }
      ],
      "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": "Dupuis JY, Wang F, Nathan H, Lam M, Grimes S, Bourke M",
        "doi": "10.1097/00000542-200102000-00006",
        "id": "dupuis-2001",
        "pmid": "11176081",
        "source": "Anesthesiology. 2001;94(2):194-204",
        "title": "The cardiac anesthesia risk evaluation score: a clinically useful predictor of mortality and morbidity after cardiac surgery"
      },
      "formula": "care",
      "formula_expression": "Caller-assigned CARE class 1-5; append E when emergency is true for classes 3-5 only (Dupuis 2001). Emergency never applies to CARE 1 or 2.",
      "care_class": 1,
      "care_label": "1",
      "morbidity_percent": 5.4,
      "mortality_percent": 0.5
    }
  ]
}

Response

Example JSON

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

{
  "description": "Patient with stable cardiac disease and no other medical problem. A noncomplex surgery is undertaken.",
  "emergency": false,
  "components": [
    {
      "value": 1,
      "factor": "care_class",
      "met": true
    },
    {
      "factor": "emergency",
      "met": false
    }
  ],
  "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": "Dupuis JY, Wang F, Nathan H, Lam M, Grimes S, Bourke M",
    "doi": "10.1097/00000542-200102000-00006",
    "id": "dupuis-2001",
    "pmid": "11176081",
    "source": "Anesthesiology. 2001;94(2):194-204",
    "title": "The cardiac anesthesia risk evaluation score: a clinically useful predictor of mortality and morbidity after cardiac surgery"
  },
  "formula": "care",
  "formula_expression": "Caller-assigned CARE class 1-5; append E when emergency is true for classes 3-5 only (Dupuis 2001). Emergency never applies to CARE 1 or 2.",
  "care_class": 1,
  "care_label": "1",
  "morbidity_percent": 5.4,
  "mortality_percent": 0.5
}

Client errors (HTTP 400)

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

Related tools

• ASA-PS — Return the caller-assigned ASA Physical Status class 1-6 with optional emergency suffix E and the published class definition (ASA 2014, last amended 2020).
• Gupta MICA — Compute the Gupta 2011 Table 2 logistic probability of 30-day myocardial infarction or cardiac arrest after surgery from age, ASA class, functional status, creatinine category, and surgery type.

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.