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Rome IV proctalgia fugax

Rao 2016 Rome IV proctalgia fugax

Apply the Rao 2016 Rome IV proctalgia fugax (F2c) diagnostic criteria and return whether the published proctalgia fugax box holds (rome_iv_proctalgia_fugax).

LIVE $0.005 USDC GET /api/calc/rome_iv_proctalgia_fugax

Markdown: /docs/rome-iv-proctalgia-fugax.md · Canonical: https://magentlab.com/docs/rome-iv-proctalgia-fugax

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

What it computes

Apply the Rao 2016 Rome IV proctalgia fugax (F2c) diagnostic criteria and return whether the published proctalgia fugax box holds (rome_iv_proctalgia_fugax).

When to use

When an agent already has the six caller-assigned Rao 2016 Rome IV proctalgia fugax flags and needs whether the published box holds. magent does not examine the rectum.

When not to use

Not a medical device.
Not a diagnosis. magent does not diagnose proctalgia fugax.
The caller assigns the six flags. magent does not examine the rectum.
This tool is Rao 2016 Rome IV proctalgia fugax (F2c) only. Not levator ani syndrome (chronic or recurrent rectal pain lasting 30 minutes or longer with puborectalis tenderness). Not unspecified functional anorectal pain.

Formula

rome_iv_proctalgia_fugax iff recurrent_rectal_pain_unrelated_to_defecation and episodes_seconds_to_minutes_max_30_minutes and no_anorectal_pain_between_episodes and other_causes_of_rectal_pain_excluded and fulfilled_last_3_months and onset_at_least_6_months (Rao 2016 Rome IV proctalgia fugax)

Citation

Title: Anorectal Disorders
Authors: Rao SSC, Bharucha AE, Chiarioni G, Felt-Bersma R, Knowles C, Malcolm A, Wald A
Source: Gastroenterology. 2016;150(6):1430-1442
DOI: 10.1053/j.gastro.2016.02.009

Worked example

All six required flags

Given: episodes_seconds_to_minutes_max_30_minutes=truefulfilled_last_3_months=trueno_anorectal_pain_between_episodes=trueonset_at_least_6_months=trueother_causes_of_rectal_pain_excluded=truerecurrent_rectal_pain_unrelated_to_defecation=true

Recurrent rectal pain unrelated to defecation is true
Episodes last seconds to minutes with a maximum of 30 minutes
No anorectal pain between episodes is true
Other causes of rectal pain are excluded
Criteria fulfilled for the last 3 months and onset at least 6 months prior are true
rome_iv_proctalgia_fugax is true

Five required flags without 6-month onset

Given: episodes_seconds_to_minutes_max_30_minutes=truefulfilled_last_3_months=trueno_anorectal_pain_between_episodes=trueonset_at_least_6_months=falseother_causes_of_rectal_pain_excluded=truerecurrent_rectal_pain_unrelated_to_defecation=true

Five required flags hold
Onset at least 6 months prior is false
rome_iv_proctalgia_fugax is false

Also searched as

Rome IV proctalgia fugax
Rao 2016 proctalgia fugax
proctalgia fugax Rome IV
Rome IV F2c
brief rectal pain Rome IV
proctalgia fugax criteria
Rome IV anorectal proctalgia
functional anorectal pain fugax

Try

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

/api/calc/rome_iv_proctalgia_fugax?recurrent_rectal_pain_unrelated_to_defecation=true&episodes_seconds_to_minutes_max_30_minutes=true&no_anorectal_pain_between_episodes=true&other_causes_of_rectal_pain_excluded=true&fulfilled_last_3_months=true&onset_at_least_6_months=true

Full URL: https://api.magentlab.com/api/calc/rome_iv_proctalgia_fugax?recurrent_rectal_pain_unrelated_to_defecation=true&episodes_seconds_to_minutes_max_30_minutes=true&no_anorectal_pain_between_episodes=true&other_causes_of_rectal_pain_excluded=true&fulfilled_last_3_months=true&onset_at_least_6_months=true

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/rome_iv_proctalgia_fugax?recurrent_rectal_pain_unrelated_to_defecation=true&episodes_seconds_to_minutes_max_30_minutes=true&no_anorectal_pain_between_episodes=true&other_causes_of_rectal_pain_excluded=true&fulfilled_last_3_months=true&onset_at_least_6_months=true"

Parameters

Name	Type	Required	Description
`recurrent_rectal_pain_unrelated_to_defecation`	boolean	required	Recurrent episodes of rectal pain unrelated to defecation, as assigned (Rao 2016 Rome IV proctalgia fugax F2c). true or false as assigned by the caller. magent does not examine the rectum.
`episodes_seconds_to_minutes_max_30_minutes`	boolean	required	Episodes last from seconds to minutes, with a maximum duration of 30 minutes, as assigned (Rao 2016 F2c). Distinguishes proctalgia fugax from levator ani syndrome (pain lasting 30 minutes or longer). true or false as assigned by the caller. magent does not examine the rectum.
`no_anorectal_pain_between_episodes`	boolean	required	Absence of anorectal pain between episodes, as assigned (Rao 2016). true or false as assigned by the caller. magent does not examine the rectum.
`other_causes_of_rectal_pain_excluded`	boolean	required	Other causes of rectal pain excluded as assigned: inflammatory bowel disease, intramuscular abscess, anal fissure, thrombosed hemorrhoids, prostatitis, coccygodynia, and major structural alterations of the pelvic floor (Rao 2016). true or false as assigned by the caller. magent does not examine the rectum.
`fulfilled_last_3_months`	boolean	required	Criteria fulfilled for the last 3 months, as assigned (Rao 2016). true or false as assigned by the caller. magent does not take a history.
`onset_at_least_6_months`	boolean	required	Symptom onset at least 6 months prior to diagnosis, as assigned (Rao 2016). true or false as assigned by the caller. magent does not take a history.

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/rome_iv_proctalgia_fugax 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": [
    {
      "episodes_seconds_to_minutes_max_30_minutes": "true",
      "fulfilled_last_3_months": "true",
      "no_anorectal_pain_between_episodes": "true",
      "onset_at_least_6_months": "true",
      "other_causes_of_rectal_pain_excluded": "true",
      "recurrent_rectal_pain_unrelated_to_defecation": "true"
    },
    {
      "episodes_seconds_to_minutes_max_30_minutes": "true",
      "fulfilled_last_3_months": "true",
      "no_anorectal_pain_between_episodes": "true",
      "onset_at_least_6_months": "true",
      "other_causes_of_rectal_pain_excluded": "true",
      "recurrent_rectal_pain_unrelated_to_defecation": "true"
    }
  ]
}

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/rome_iv_proctalgia_fugax",
  "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": "Rao SSC, Bharucha AE, Chiarioni G, Felt-Bersma R, Knowles C, Malcolm A, Wald A",
        "doi": "10.1053/j.gastro.2016.02.009",
        "id": "rao-2016",
        "pmid": "27144630",
        "source": "Gastroenterology. 2016;150(6):1430-1442",
        "title": "Anorectal Disorders"
      },
      "formula": "rome_iv_proctalgia_fugax",
      "formula_expression": "rome_iv_proctalgia_fugax iff recurrent_rectal_pain_unrelated_to_defecation and episodes_seconds_to_minutes_max_30_minutes and no_anorectal_pain_between_episodes and other_causes_of_rectal_pain_excluded and fulfilled_last_3_months and onset_at_least_6_months (Rao 2016 Rome IV proctalgia fugax)",
      "criteria": [
        {
          "factor": "recurrent_rectal_pain_unrelated_to_defecation",
          "met": true
        },
        {
          "factor": "episodes_seconds_to_minutes_max_30_minutes",
          "met": true
        },
        {
          "factor": "no_anorectal_pain_between_episodes",
          "met": true
        },
        {
          "factor": "other_causes_of_rectal_pain_excluded",
          "met": true
        },
        {
          "factor": "fulfilled_last_3_months",
          "met": true
        },
        {
          "factor": "onset_at_least_6_months",
          "met": true
        }
      ],
      "rome_iv_proctalgia_fugax": 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": "Rao SSC, Bharucha AE, Chiarioni G, Felt-Bersma R, Knowles C, Malcolm A, Wald A",
        "doi": "10.1053/j.gastro.2016.02.009",
        "id": "rao-2016",
        "pmid": "27144630",
        "source": "Gastroenterology. 2016;150(6):1430-1442",
        "title": "Anorectal Disorders"
      },
      "formula": "rome_iv_proctalgia_fugax",
      "formula_expression": "rome_iv_proctalgia_fugax iff recurrent_rectal_pain_unrelated_to_defecation and episodes_seconds_to_minutes_max_30_minutes and no_anorectal_pain_between_episodes and other_causes_of_rectal_pain_excluded and fulfilled_last_3_months and onset_at_least_6_months (Rao 2016 Rome IV proctalgia fugax)",
      "criteria": [
        {
          "factor": "recurrent_rectal_pain_unrelated_to_defecation",
          "met": true
        },
        {
          "factor": "episodes_seconds_to_minutes_max_30_minutes",
          "met": true
        },
        {
          "factor": "no_anorectal_pain_between_episodes",
          "met": true
        },
        {
          "factor": "other_causes_of_rectal_pain_excluded",
          "met": true
        },
        {
          "factor": "fulfilled_last_3_months",
          "met": true
        },
        {
          "factor": "onset_at_least_6_months",
          "met": true
        }
      ],
      "rome_iv_proctalgia_fugax": true
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rome_iv_proctalgia_fugax
`formula_expression`	string	Rao 2016 Rome IV proctalgia fugax F2c: recurrent rectal pain unrelated to defecation, episodes lasting seconds to minutes with a maximum of 30 minutes, no anorectal pain between episodes, other causes of rectal pain excluded, last-3-months criteria, and 6-month onset
`rome_iv_proctalgia_fugax`	boolean	true only when all six required flags hold. Not a diagnosis.
`criteria`	array	Per-factor rows with factor and met for the six required flags
`citation`	object	Rao 2016 Gastroenterology citation
`disclaimer`	string	Not-a-device notice

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": "Rao SSC, Bharucha AE, Chiarioni G, Felt-Bersma R, Knowles C, Malcolm A, Wald A",
    "doi": "10.1053/j.gastro.2016.02.009",
    "id": "rao-2016",
    "pmid": "27144630",
    "source": "Gastroenterology. 2016;150(6):1430-1442",
    "title": "Anorectal Disorders"
  },
  "formula": "rome_iv_proctalgia_fugax",
  "formula_expression": "rome_iv_proctalgia_fugax iff recurrent_rectal_pain_unrelated_to_defecation and episodes_seconds_to_minutes_max_30_minutes and no_anorectal_pain_between_episodes and other_causes_of_rectal_pain_excluded and fulfilled_last_3_months and onset_at_least_6_months (Rao 2016 Rome IV proctalgia fugax)",
  "criteria": [
    {
      "factor": "recurrent_rectal_pain_unrelated_to_defecation",
      "met": true
    },
    {
      "factor": "episodes_seconds_to_minutes_max_30_minutes",
      "met": true
    },
    {
      "factor": "no_anorectal_pain_between_episodes",
      "met": true
    },
    {
      "factor": "other_causes_of_rectal_pain_excluded",
      "met": true
    },
    {
      "factor": "fulfilled_last_3_months",
      "met": true
    },
    {
      "factor": "onset_at_least_6_months",
      "met": true
    }
  ],
  "rome_iv_proctalgia_fugax": true
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_rome_iv_proctalgia_fugax`	Rome IV proctalgia fugax needs the Rao 2016 anorectal proctalgia-fugax flags. Returned before settlement; you are not charged.
400	`invalid_flag`	boolean clinical flags must be true or false 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

Rao 2016 Rome IV levator ani syndrome — Apply the Rao 2016 Rome IV levator ani syndrome (F2a) diagnostic criteria and return whether the published levator ani box holds (rome_iv_levator_ani).
Rome IV FC — Apply the Mearin 2016 Rome IV C2 functional constipation criteria and return symptom_count (0-6) and whether the published C2 box holds (rome_iv_fc).

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.