Pregnancy-unique quantification of emesis and nausea

PUQE

Sum three caller-assigned Koren 2002 12-hour PUQE items (nausea_duration, vomiting_episodes, retching_episodes; each integer 1-5) and return the published 3-15 total. Does not apply later 24-hour, trimester-long, or 3-6 / 7-12 / ≥13 cuts.

LIVE $0.005 USDC GET /api/calc/puqe

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

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

What it computes

When to use

When an agent already has Koren 2002 last-12-hour 1-5 integers for nausea duration, vomiting episodes, and retching episodes and needs the published total. magent does not interview the patient, order an antiemetic, or score a later 24-hour or trimester-long form.

When not to use

Not a medical device and not an antiemetic order.
Each of the three items is a caller-assigned integer 1-5 from the Koren 2002 last-12-hour table. magent does not interview the patient.
This is Koren 2002 12-hour PUQE only (nausea duration, vomiting episodes, retching episodes; total 3-15). magent does not score later 24-hour or trimester-long forms.
Koren 2002 published no 3-6 / 7-12 / ≥13 total-score severity bands. This tool returns score and max_score only. It does not apply later website or review cuts.

Formula

PUQE = nausea_duration + vomiting_episodes + retching_episodes; each caller-assigned 1-5 as in Koren 2002 (last 12 hours); total 3-15; Koren 2002 published no 3-6 / 7-12 / ≥13 total-score severity bands

Citation

Title: Motherisk-PUQE (pregnancy-unique quantification of emesis and nausea) scoring system for nausea and vomiting of pregnancy
Authors: Koren G, Boskovic R, Hard M, Maltepe C, Navioz Y, Einarson A
Source: Am J Obstet Gynecol. 2002;186(5 Suppl Understanding):S228-S231
DOI: 10.1067/mob.2002.123054

Worked example

All items 1

Given: nausea_duration=1retching_episodes=1vomiting_episodes=1

nausea_duration, vomiting_episodes, and retching_episodes are 1 as assigned by the caller
Score = 3 (max 15). Koren 2002 published no total-score severity band.

All items 5

Given: nausea_duration=5retching_episodes=5vomiting_episodes=5

each of the three Koren 2002 items is 5 as assigned by the caller
Score = 15 (max 15). No total-score severity band.

Also searched as

PUQE
pregnancy-unique quantification of emesis
Koren 2002 PUQE
12-hour PUQE
nausea and vomiting of pregnancy score
PUQE score
pregnancy nausea emesis score
NVP quantification

Try

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

/api/calc/puqe?nausea_duration=1&vomiting_episodes=1&retching_episodes=1

Full URL: https://api.magentlab.com/api/calc/puqe?nausea_duration=1&vomiting_episodes=1&retching_episodes=1

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/puqe?nausea_duration=1&vomiting_episodes=1&retching_episodes=1"

Parameters

Name	Type	Required	Description
`nausea_duration`	integer	required	Caller-assigned Koren 2002 PUQE nausea duration in the last 12 hours (integer 1-5): 1 not at all; 2 1 hour or less; 3 2-3 hours; 4 4-6 hours; 5 more than 6 hours. magent does not interview the patient.
`vomiting_episodes`	integer	required	Caller-assigned Koren 2002 PUQE vomiting episodes in the last 12 hours (integer 1-5): 1 did not throw up; 2 1-2 times; 3 3-4 times; 4 5-6 times; 5 7 or more times. magent does not interview the patient.
`retching_episodes`	integer	required	Caller-assigned Koren 2002 PUQE retching or dry heaves without bringing anything up in the last 12 hours (integer 1-5): 1 no time; 2 1-2 times; 3 3-4 times; 4 5-6 times; 5 7 or more times. magent does not interview 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/puqe 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": [
    {
      "nausea_duration": "1",
      "retching_episodes": "1",
      "vomiting_episodes": "1"
    },
    {
      "nausea_duration": "1",
      "retching_episodes": "1",
      "vomiting_episodes": "1"
    }
  ]
}

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/puqe",
  "items": [
    {
      "components": [
        {
          "value": 1,
          "factor": "nausea_duration",
          "points": 1,
          "present": true
        },
        {
          "value": 1,
          "factor": "vomiting_episodes",
          "points": 1,
          "present": true
        },
        {
          "value": 1,
          "factor": "retching_episodes",
          "points": 1,
          "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": "Koren G, Boskovic R, Hard M, Maltepe C, Navioz Y, Einarson A",
        "doi": "10.1067/mob.2002.123054",
        "id": "koren-2002",
        "pmid": "12011891",
        "source": "Am J Obstet Gynecol. 2002;186(5 Suppl Understanding):S228-S231",
        "title": "Motherisk-PUQE (pregnancy-unique quantification of emesis and nausea) scoring system for nausea and vomiting of pregnancy"
      },
      "formula": "puqe",
      "formula_expression": "PUQE = nausea_duration + vomiting_episodes + retching_episodes; each caller-assigned 1-5 as in Koren 2002 (last 12 hours); total 3-15; Koren 2002 published no 3-6 / 7-12 / ≥13 total-score severity bands",
      "max_score": 15,
      "score": 3
    },
    {
      "components": [
        {
          "value": 1,
          "factor": "nausea_duration",
          "points": 1,
          "present": true
        },
        {
          "value": 1,
          "factor": "vomiting_episodes",
          "points": 1,
          "present": true
        },
        {
          "value": 1,
          "factor": "retching_episodes",
          "points": 1,
          "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": "Koren G, Boskovic R, Hard M, Maltepe C, Navioz Y, Einarson A",
        "doi": "10.1067/mob.2002.123054",
        "id": "koren-2002",
        "pmid": "12011891",
        "source": "Am J Obstet Gynecol. 2002;186(5 Suppl Understanding):S228-S231",
        "title": "Motherisk-PUQE (pregnancy-unique quantification of emesis and nausea) scoring system for nausea and vomiting of pregnancy"
      },
      "formula": "puqe",
      "formula_expression": "PUQE = nausea_duration + vomiting_episodes + retching_episodes; each caller-assigned 1-5 as in Koren 2002 (last 12 hours); total 3-15; Koren 2002 published no 3-6 / 7-12 / ≥13 total-score severity bands",
      "max_score": 15,
      "score": 3
    }
  ]
}

Response

Field	Type	Description
`formula`	string	puqe
`formula_expression`	string	Exact expression used
`score`	integer	Koren 2002 12-hour PUQE sum of three caller-assigned 1-5 items (3-15). No later total-score severity band.
`max_score`	integer	Always 15
`components`	array	Per-item caller-assigned points
`citation`	object	Koren et al. Am J Obstet Gynecol 2002 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 1,
      "factor": "nausea_duration",
      "points": 1,
      "present": true
    },
    {
      "value": 1,
      "factor": "vomiting_episodes",
      "points": 1,
      "present": true
    },
    {
      "value": 1,
      "factor": "retching_episodes",
      "points": 1,
      "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": "Koren G, Boskovic R, Hard M, Maltepe C, Navioz Y, Einarson A",
    "doi": "10.1067/mob.2002.123054",
    "id": "koren-2002",
    "pmid": "12011891",
    "source": "Am J Obstet Gynecol. 2002;186(5 Suppl Understanding):S228-S231",
    "title": "Motherisk-PUQE (pregnancy-unique quantification of emesis and nausea) scoring system for nausea and vomiting of pregnancy"
  },
  "formula": "puqe",
  "formula_expression": "PUQE = nausea_duration + vomiting_episodes + retching_episodes; each caller-assigned 1-5 as in Koren 2002 (last 12 hours); total 3-15; Koren 2002 published no 3-6 / 7-12 / ≥13 total-score severity bands",
  "max_score": 15,
  "score": 3
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_puqe`	PUQE inputs must match Koren 2002 nausea duration, vomiting episodes, and retching episodes from that paper. 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

Apgar score — Compute the Apgar newborn evaluation score as the sum of five caller-assigned 0-2 signs.
Bishop score — Return the Bishop 1964 pelvic score as the sum of five caller-assigned integer components (dilation, effacement, station, consistency, position).

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.