{
  "resourceType": "StructureDefinition",
  "id": "SmartAL-Observation-BloodPressure",
  "url": "http://alticelabs.com/fhir/StructureDefinition/SmartAL-Observation-BloodPressure",
  "name": "SmartALObservationBloodPressure",
  "title": "SmartAL Observation — Blood Pressure",
  "status": "active",
  "description": "Blood pressure panel observation (LOINC 85354-9). This is a panel with no\ntop-level value. Systolic and diastolic readings are expressed as component\nentries.\n\nEach component MAY include interpretation and referenceRange when a matching\nObservationDefinition exists.",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://alticelabs.com/fhir/StructureDefinition/SmartAL-Observation-Base",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation.code.coding",
        "path": "Observation.code.coding",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "code"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "Observation.code.coding:loinc",
        "path": "Observation.code.coding",
        "sliceName": "loinc",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Observation.code.coding:loinc.system",
        "path": "Observation.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.code.coding:loinc.code",
        "path": "Observation.code.coding.code",
        "min": 1,
        "fixedCode": "85354-9"
      },
      {
        "id": "Observation.code.coding:loinc.display",
        "path": "Observation.code.coding.display",
        "fixedString": "Blood pressure panel with all children optional"
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "max": "0"
      },
      {
        "id": "Observation.component",
        "path": "Observation.component",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "code.coding.code"
            }
          ],
          "rules": "open",
          "ordered": false
        },
        "min": 2
      },
      {
        "id": "Observation.component:systolic",
        "path": "Observation.component",
        "sliceName": "systolic",
        "min": 1,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Observation.component:systolic.code.coding",
        "path": "Observation.component.code.coding",
        "min": 1
      },
      {
        "id": "Observation.component:systolic.code.coding.system",
        "path": "Observation.component.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.component:systolic.code.coding.code",
        "path": "Observation.component.code.coding.code",
        "min": 1,
        "fixedCode": "8480-6"
      },
      {
        "id": "Observation.component:systolic.code.coding.display",
        "path": "Observation.component.code.coding.display",
        "fixedString": "Systolic blood pressure"
      },
      {
        "id": "Observation.component:systolic.value[x]",
        "path": "Observation.component.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Observation.component:systolic.value[x].value",
        "path": "Observation.component.value[x].value",
        "min": 1
      },
      {
        "id": "Observation.component:systolic.value[x].unit",
        "path": "Observation.component.value[x].unit",
        "fixedString": "mmHg"
      },
      {
        "id": "Observation.component:systolic.value[x].system",
        "path": "Observation.component.value[x].system",
        "fixedUri": "http://unitsofmeasure.org"
      },
      {
        "id": "Observation.component:systolic.value[x].code",
        "path": "Observation.component.value[x].code",
        "fixedCode": "mm[Hg]"
      },
      {
        "id": "Observation.component:systolic.interpretation",
        "path": "Observation.component.interpretation",
        "short": "MHR-enriched interpretation (N, L, LL, H, HH)"
      },
      {
        "id": "Observation.component:systolic.referenceRange",
        "path": "Observation.component.referenceRange",
        "short": "MHR-enriched reference ranges for systolic"
      },
      {
        "id": "Observation.component:diastolic",
        "path": "Observation.component",
        "sliceName": "diastolic",
        "min": 1,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Observation.component:diastolic.code.coding",
        "path": "Observation.component.code.coding",
        "min": 1
      },
      {
        "id": "Observation.component:diastolic.code.coding.system",
        "path": "Observation.component.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.component:diastolic.code.coding.code",
        "path": "Observation.component.code.coding.code",
        "min": 1,
        "fixedCode": "8462-4"
      },
      {
        "id": "Observation.component:diastolic.code.coding.display",
        "path": "Observation.component.code.coding.display",
        "fixedString": "Diastolic blood pressure"
      },
      {
        "id": "Observation.component:diastolic.value[x]",
        "path": "Observation.component.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Observation.component:diastolic.value[x].value",
        "path": "Observation.component.value[x].value",
        "min": 1
      },
      {
        "id": "Observation.component:diastolic.value[x].unit",
        "path": "Observation.component.value[x].unit",
        "fixedString": "mmHg"
      },
      {
        "id": "Observation.component:diastolic.value[x].system",
        "path": "Observation.component.value[x].system",
        "fixedUri": "http://unitsofmeasure.org"
      },
      {
        "id": "Observation.component:diastolic.value[x].code",
        "path": "Observation.component.value[x].code",
        "fixedCode": "mm[Hg]"
      },
      {
        "id": "Observation.component:diastolic.interpretation",
        "path": "Observation.component.interpretation",
        "short": "MHR-enriched interpretation (N, L, LL, H, HH)"
      },
      {
        "id": "Observation.component:diastolic.referenceRange",
        "path": "Observation.component.referenceRange",
        "short": "MHR-enriched reference ranges for diastolic"
      }
    ]
  }
}