RDOS (Campbell 2010)

RDOS

Sum the eight Campbell 2010 RDOS observer-rated items (each a caller-assigned integer 0-2) and return the published total (max 16).

LIVE $0.005 USDC GET /api/calc/rdos

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

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

What it computes

Sum the eight Campbell 2010 RDOS observer-rated items (each a caller-assigned integer 0-2) and return the published total (max 16).

When to use

When an agent has already assigned Campbell 2010 item integers for a patient unable to self-report dyspnea and needs the published 0-16 total, not a later intensity cutoff, opioid order, or oxygen order.

When not to use

Not a medical device and not an opioid or oxygen order.
Each of the eight items is a caller-assigned integer 0, 1, or 2 from Campbell 2010. magent does not observe the patient and does not convert raw beats/min or breaths/min.
Campbell 2010 published the 0-16 instrument. magent does not apply later cutoff papers.

Formula

RDOS = heart_rate + respiratory_rate + restlessness + paradoxical_breathing + accessory_muscle_use + grunting + nasal_flaring + look_of_fear; each caller-assigned 0-2; max 16

Citation

Title: A Respiratory Distress Observation Scale for patients unable to self-report dyspnea
Authors: Campbell ML, Templin T, Walch J
Source: J Palliat Med. 2010;13(3):285-290
DOI: 10.1089/jpm.2009.0229

Worked example

All items 0

Given: accessory_muscle_use=0grunting=0heart_rate=0look_of_fear=0nasal_flaring=0paradoxical_breathing=0respiratory_rate=0restlessness=0

heart_rate 0 + respiratory_rate 0 + restlessness 0 + paradoxical_breathing 0 + accessory_muscle_use 0 + grunting 0 + nasal_flaring 0 + look_of_fear 0
Score = 0 (max 16)

All items 2

Given: accessory_muscle_use=2grunting=2heart_rate=2look_of_fear=2nasal_flaring=2paradoxical_breathing=2respiratory_rate=2restlessness=2

heart_rate 2 + respiratory_rate 2 + restlessness 2 + paradoxical_breathing 2 + accessory_muscle_use 2 + grunting 2 + nasal_flaring 2 + look_of_fear 2
Score = 16 (max 16)

Also searched as

RDOS
Respiratory Distress Observation Scale
Campbell RDOS
RDOS score
respiratory distress observation
Campbell 2010 dyspnea scale
observer-rated dyspnea

Try

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

/api/calc/rdos?heart_rate=0&respiratory_rate=0&restlessness=0&paradoxical_breathing=0&accessory_muscle_use=0&grunting=0&nasal_flaring=0&look_of_fear=0

Full URL: https://api.magentlab.com/api/calc/rdos?heart_rate=0&respiratory_rate=0&restlessness=0&paradoxical_breathing=0&accessory_muscle_use=0&grunting=0&nasal_flaring=0&look_of_fear=0

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/rdos?heart_rate=0&respiratory_rate=0&restlessness=0&paradoxical_breathing=0&accessory_muscle_use=0&grunting=0&nasal_flaring=0&look_of_fear=0"

Parameters

Name	Type	Required	Description
`heart_rate`	integer	required	Caller-assigned Campbell 2010 heart_rate points (integer 0-2). Paper bins: ≤90 beats/min → 0; 91–110 → 1; ≥111 → 2. magent does not convert raw beats/min and does not observe the patient.
`respiratory_rate`	integer	required	Caller-assigned Campbell 2010 respiratory_rate points (integer 0-2). Paper bins: ≤18 breaths/min → 0; 19–28 → 1; ≥29 → 2. magent does not convert raw breaths/min and does not observe the patient.
`restlessness`	integer	required	Caller-assigned Campbell 2010 restlessness (nonpurposeful movements) points (integer 0-2): 0 none; 1 occasional, slight movements; 2 frequent movements. magent does not observe the patient.
`paradoxical_breathing`	integer	required	Caller-assigned Campbell 2010 paradoxical_breathing points (integer 0-2). Paper scores 0 none or 2 present (abdomen moves in on inspiration); there is no 1-point cell. magent does not observe the patient.
`accessory_muscle_use`	integer	required	Caller-assigned Campbell 2010 accessory_muscle_use (rise in clavicle during inspiration) points (integer 0-2): 0 none; 1 slight rise; 2 pronounced rise. magent does not observe the patient.
`grunting`	integer	required	Caller-assigned Campbell 2010 grunting at end-expiration (guttural sound) points (integer 0-2). Paper scores 0 none or 2 present; there is no 1-point cell. magent does not observe the patient.
`nasal_flaring`	integer	required	Caller-assigned Campbell 2010 nasal_flaring (involuntary movement of nares) points (integer 0-2). Paper scores 0 none or 2 present; there is no 1-point cell. magent does not observe the patient.
`look_of_fear`	integer	required	Caller-assigned Campbell 2010 look_of_fear points (integer 0-2). Paper scores 0 none or 2 eyes wide open, facial muscles tense, brow furrowed, mouth open, teeth together; there is no 1-point cell. magent does not observe the patient.

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/rdos 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": [
    {
      "accessory_muscle_use": "0",
      "grunting": "0",
      "heart_rate": "0",
      "look_of_fear": "0",
      "nasal_flaring": "0",
      "paradoxical_breathing": "0",
      "respiratory_rate": "0",
      "restlessness": "0"
    },
    {
      "accessory_muscle_use": "0",
      "grunting": "0",
      "heart_rate": "0",
      "look_of_fear": "0",
      "nasal_flaring": "0",
      "paradoxical_breathing": "0",
      "respiratory_rate": "0",
      "restlessness": "0"
    }
  ]
}

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/rdos",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "heart_rate",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "respiratory_rate",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "restlessness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "paradoxical_breathing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "accessory_muscle_use",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "grunting",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "nasal_flaring",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "look_of_fear",
          "points": 0,
          "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": "Campbell ML, Templin T, Walch J",
        "doi": "10.1089/jpm.2009.0229",
        "id": "campbell-2010",
        "pmid": "20078243",
        "source": "J Palliat Med. 2010;13(3):285-290",
        "title": "A Respiratory Distress Observation Scale for patients unable to self-report dyspnea"
      },
      "formula": "rdos",
      "formula_expression": "RDOS = heart_rate + respiratory_rate + restlessness + paradoxical_breathing + accessory_muscle_use + grunting + nasal_flaring + look_of_fear; each caller-assigned 0-2; max 16",
      "max_score": 16,
      "score": 0
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "heart_rate",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "respiratory_rate",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "restlessness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "paradoxical_breathing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "accessory_muscle_use",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "grunting",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "nasal_flaring",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "look_of_fear",
          "points": 0,
          "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": "Campbell ML, Templin T, Walch J",
        "doi": "10.1089/jpm.2009.0229",
        "id": "campbell-2010",
        "pmid": "20078243",
        "source": "J Palliat Med. 2010;13(3):285-290",
        "title": "A Respiratory Distress Observation Scale for patients unable to self-report dyspnea"
      },
      "formula": "rdos",
      "formula_expression": "RDOS = heart_rate + respiratory_rate + restlessness + paradoxical_breathing + accessory_muscle_use + grunting + nasal_flaring + look_of_fear; each caller-assigned 0-2; max 16",
      "max_score": 16,
      "score": 0
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rdos
`formula_expression`	string	Exact expression used
`score`	integer	RDOS points 0-16
`max_score`	integer	Always 16
`components`	array	Per-item caller-assigned points
`citation`	object	Campbell et al. J Palliat Med 2010 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 0,
      "factor": "heart_rate",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "respiratory_rate",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "restlessness",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "paradoxical_breathing",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "accessory_muscle_use",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "grunting",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "nasal_flaring",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "look_of_fear",
      "points": 0,
      "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": "Campbell ML, Templin T, Walch J",
    "doi": "10.1089/jpm.2009.0229",
    "id": "campbell-2010",
    "pmid": "20078243",
    "source": "J Palliat Med. 2010;13(3):285-290",
    "title": "A Respiratory Distress Observation Scale for patients unable to self-report dyspnea"
  },
  "formula": "rdos",
  "formula_expression": "RDOS = heart_rate + respiratory_rate + restlessness + paradoxical_breathing + accessory_muscle_use + grunting + nasal_flaring + look_of_fear; each caller-assigned 0-2; max 16",
  "max_score": 16,
  "score": 0
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_rdos`	heart_rate, respiratory_rate, restlessness, paradoxical_breathing, accessory_muscle_use, grunting, nasal_flaring, and look_of_fear must each be an integer 0, 1, or 2 (Campbell 2010 RDOS). 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

NEWS2 — Compute the RCP 2017 National Early Warning Score 2 from respiratory rate, SpO2 (Scale 1 or Scale 2), supplemental oxygen, temperature, systolic BP, heart rate, and caller-assigned ACVPU.
mMRC — Return the Mahler 1988 modified Medical Research Council (mMRC) dyspnea grade 0-4 from a caller-assigned integer, with the published grade wording.

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.