{
  "schemaVersion": 1,
  "slug": "blood-pressure-calculator",
  "category": "health",
  "kind": "implementation",
  "independentValidation": false,
  "implementationHash": "d1b827f7b5dd62a2e0141c3a521c9015225cdf2e33311a91ac8e24762201390f",
  "provenance": "Generated from the calculation contract used by the published page. Publication is not external validation.",
  "sourceFiles": [
    "data/calculators/blood-pressure-calculator.json",
    "src/engine.js"
  ],
  "runtimeSource": "/sources/engine.txt",
  "runtimeHash": "5c888d8898afbdee36267bb9977829e1e2ac568f6677c8ee87469c139864645c",
  "scope": "The compute function records implemented equations, constants, lookup tables and custom rules. Inputs record defaults and allowed values; outputs record precision and units. Defaults are examples, not recommendations. General background references are not evidence for this specific algorithm.",
  "publishedFormula": {
    "formula": "MAP = (S + 2D)/3; PP = S − D",
    "vars": [
      [
        "S",
        "Systolic pressure (mmHg)"
      ],
      [
        "D",
        "Diastolic pressure (mmHg)"
      ],
      [
        "MAP",
        "Mean arterial pressure (mmHg)"
      ],
      [
        "PP",
        "Pulse pressure (mmHg)"
      ]
    ]
  },
  "externalEvidence": null,
  "contract": {
    "compute": "if(!Number.isFinite(systolic)||!Number.isFinite(diastolic)||systolic<=diastolic)return{map:null,pulsePressure:null,systolic:null,__error:'inputError'};return{map:(systolic+2*diastolic)/3,pulsePressure:systolic-diastolic,systolic};",
    "inputs": [
      {
        "name": "systolic",
        "type": "number",
        "default": 120,
        "min": 50,
        "max": 300,
        "step": 1,
        "slider": true
      },
      {
        "name": "diastolic",
        "type": "number",
        "default": 80,
        "min": 30,
        "max": 200,
        "step": 1,
        "slider": true
      }
    ],
    "outputs": [
      {
        "name": "map",
        "precision": 1,
        "unit": "mmHg"
      },
      {
        "name": "pulsePressure",
        "precision": 0,
        "unit": "mmHg"
      },
      {
        "name": "systolic",
        "precision": 0,
        "unit": "mmHg"
      }
    ],
    "interpret": null
  }
}