Maupain 2016 CAHP nomogram after OHCA

Maupain 2016 CAHP nomogram after OHCA. Integer points from age, home vs public arrest, shockable vs non-shockable rhythm, no-flow min, low-flow min, epinephrine tertile (0 / 1-2 / >=3 mg), and arterial pH. Table 3: low <150, medium 150-200, high >200. Figure 2 caption total 177 reads 88% poor outcome. Not a withdrawal-of-care order. magent does not measure pH.

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Endpoint

POST https://api.magentlab.com/api/calc/cahp

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Example input (from the provider)

{
  "body": {
    "items": [
      {
        "age": 30,
        "arrest_at_home": true,
        "arterial_ph": 7.1,
        "epinephrine_mg": 3,
        "low_flow_min": 10,
        "no_flow_min": 5,
        "shockable_rhythm": false
      },
      {
        "age": 30,
        "arrest_at_home": true,
        "arterial_ph": 7.1,
        "epinephrine_mg": 3,
        "low_flow_min": 10,
        "no_flow_min": 5,
        "shockable_rhythm": false
      }
    ]
  },
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "items": {
              "items": {
                "properties": {
                  "age": {
                    "description": "Age in years (18-120). Figure 2 caption: 30 years \u2192 22. Linear nomogram: round(1.1*(age-10)); truncated below 10 and above 100.",
                    "type": "integer"
                  },
                  "arrest_at_home": {
                    "description": "Cardiac arrest at home versus public, as assigned by the caller. true scores 25 (Figure 2 caption); false (public) scores 0.",
                    "type": "boolean"
                  },
                  "arterial_ph": {
                    "description": "Admission arterial pH (6.5-7.8). Figure 2 caption: 7.10 \u2192 38. Linear nomogram: round(585-77*pH); truncated to 6.5-7.5. magent does not measure pH.",
                    "type": "number"
                  },
                  "epinephrine_mg": {
                    "description": "Total pre-ROSC epinephrine in mg (integer 0-30). Table 2 tertiles on the nomogram: 0 \u2192 0; 1-2 \u2192 27; \u22653 \u2192 43 (Figure 2 caption 3 mg \u2192 43).",
                    "type": "integer"
                  },
                  "low_flow_min": {
                    "description": "BLS-to-ROSC (low-flow) minutes (integer 0-180). Figure 2 caption: 10 min \u2192 8. Linear nomogram: round(0.8*minutes); truncated above 60.",
                    "type": "integer"
                  },
                  "no_flow_min": {
                    "description": "Collapse-to-BLS (no-flow) minutes (integer 0-90). Figure 2 caption: 5 min \u2192 14. Linear nomogram: round(2.8*minutes); truncated above 30.",
                    "type": "integer"
                  },
                  "shockable_rhythm": {
                    "description": "Initial shockable rhythm (VF or pulseless VT) as assigned by the caller. true scores 0; false (non-shockable) scores 27 (Figure 2 caption).",
                    "type": "boolean"
                  }
                },
                "required": [
                  "age",
                  "arrest_at_home",
                  "shockable_rhythm",
                  "no_flow_min",
                  "low_flow_min",
                  "epinephrine_mg",
                  "arterial_ph"
                ],
                "type": "object"
              },
              "maxItems": 25,
              "minItems": 1,
              "type": "array"
            }
          },
          "required": [
            "items"
          ],
          "type": "object"
        },
        "headers": {
          "additionalProperties": {
            "type": "string"
          },
          "type": "object"
        },
        "method": {
          "const": "POST",
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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