ESUS (Hart 2014)

ESUS (Hart 2014). True iff all five caller-assigned flags hold: non-lacunar infarct on CT/MRI; no ≥50% stenosis supplying the ischaemia; no major-risk cardioembolic source; no other specific cause; and Panel 3 minimum workup (brain CT/MRI, 12-lead ECG, precordial echo, ≥24 h automated rhythm monitoring (not telemetry), extra- and intracranial arterial imaging). Incomplete workup is not ESUS. Not a stroke diagnosis, not TOAST cryptogenic, not anticoagulation. magent does not read imaging.

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

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

Our checks, last 30 days

Example input (from the provider)

{
  "body": {
    "items": [
      {
        "minimum_workup": true,
        "no_major_risk_cardioembolic": true,
        "no_other_specific_cause": true,
        "no_stenosis_ge_50": true,
        "non_lacunar_infarct": true
      },
      {
        "minimum_workup": true,
        "no_major_risk_cardioembolic": true,
        "no_other_specific_cause": true,
        "no_stenosis_ge_50": true,
        "non_lacunar_infarct": true
      }
    ]
  },
  "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": {
                  "minimum_workup": {
                    "description": "Hart 2014 Panel 3 minimum diagnostic assessment, as assigned by the caller. true only if brain CT or MRI, 12-lead ECG, precordial echocardiography, cardiac monitoring for \u226524 h with automated rhythm detection (telemetry is not sufficient), and imaging of both extracranial and intracranial arteries supplying the ischaemic territory have been done. Incomplete workup returns esus false (not HTTP 400). true or false. magent does not read imaging.",
                    "type": "boolean"
                  },
                  "no_major_risk_cardioembolic": {
                    "description": "No major-risk cardioembolic source, as assigned by the caller (Hart 2014 Panel 2). Major-risk sources (paper footnote): permanent or paroxysmal atrial fibrillation, sustained atrial flutter, intracardiac thrombus, prosthetic cardiac valve, atrial myxoma or other cardiac tumours, mitral stenosis, recent (<4 weeks) myocardial infarction, left ventricular ejection fraction less than 30%, valvular vegetations, or infective endocarditis. true or false. The caller assigns this boolean; magent does not enumerate each source as a separate required param.",
                    "type": "boolean"
                  },
                  "no_other_specific_cause": {
                    "description": "No other specific cause identified, as assigned by the caller (Hart 2014 Panel 2). Paper examples: arteritis, dissection, migraine/vasospasm, drug misuse. true or false. magent does not diagnose an alternative aetiology.",
                    "type": "boolean"
                  },
                  "no_stenosis_ge_50": {
                    "description": "Absence of extracranial or intracranial atherosclerosis causing \u226550% luminal stenosis in arteries supplying the area of ischaemia, as assigned by the caller (Hart 2014 Panel 2). true means no such stenosis. true or false. magent does not read vascular imaging.",
                    "type": "boolean"
                  },
                  "non_lacunar_infarct": {
                    "description": "Stroke detected by CT or MRI that is not lacunar, as assigned by the caller (Hart 2014 Panel 2). Lacunar = subcortical infarct \u22641.5 cm (\u22642.0 cm on MRI diffusion images) in largest dimension, in the distribution of the small penetrating cerebral arteries. true or false. magent does not read imaging.",
                    "type": "boolean"
                  }
                },
                "required": [
                  "non_lacunar_infarct",
                  "no_stenosis_ge_50",
                  "no_major_risk_cardioembolic",
                  "no_other_specific_cause",
                  "minimum_workup"
                ],
                "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"
}

This page as JSON