<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="ie-core-blood-pressure" />
  <url value="https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-blood-pressure" />
  <name value="IECoreBloodPressure" />
  <title value="IE Core Blood Pressure" />
  <status value="draft" />
  <description value="Records blood pressure observations with systolic and diastolic components in the Irish healthcare context." />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-vital-signs" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.code">
      <path value="Observation.code" />
      <patternCodeableConcept>
        <coding>
          <system value="http://loinc.org" />
          <code value="85354-9" />
          <display value="Blood pressure panel with all children optional" />
        </coding>
      </patternCodeableConcept>
    </element>
    <element id="Observation.component">
      <path value="Observation.component" />
      <slicing>
        <discriminator>
          <type value="pattern" />
          <path value="code" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <min value="2" />
    </element>
    <element id="Observation.component:systolic">
      <path value="Observation.component" />
      <sliceName value="systolic" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:systolic.code">
      <path value="Observation.component.code" />
      <patternCodeableConcept>
        <coding>
          <system value="http://loinc.org" />
          <code value="8480-6" />
          <display value="Systolic blood pressure" />
        </coding>
      </patternCodeableConcept>
    </element>
    <element id="Observation.component:systolic.value[x]">
      <path value="Observation.component.value[x]" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Observation.component:systolic.value[x].value">
      <path value="Observation.component.value[x].value" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:systolic.value[x].unit">
      <path value="Observation.component.value[x].unit" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:systolic.value[x].system">
      <path value="Observation.component.value[x].system" />
      <min value="1" />
      <patternUri value="http://unitsofmeasure.org" />
    </element>
    <element id="Observation.component:systolic.value[x].code">
      <path value="Observation.component.value[x].code" />
      <min value="1" />
      <patternCode value="mm[Hg]" />
    </element>
    <element id="Observation.component:diastolic">
      <path value="Observation.component" />
      <sliceName value="diastolic" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:diastolic.code">
      <path value="Observation.component.code" />
      <patternCodeableConcept>
        <coding>
          <system value="http://loinc.org" />
          <code value="8462-4" />
          <display value="Diastolic blood pressure" />
        </coding>
      </patternCodeableConcept>
    </element>
    <element id="Observation.component:diastolic.value[x]">
      <path value="Observation.component.value[x]" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Observation.component:diastolic.value[x].value">
      <path value="Observation.component.value[x].value" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:diastolic.value[x].unit">
      <path value="Observation.component.value[x].unit" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:diastolic.value[x].system">
      <path value="Observation.component.value[x].system" />
      <min value="1" />
      <patternUri value="http://unitsofmeasure.org" />
    </element>
    <element id="Observation.component:diastolic.value[x].code">
      <path value="Observation.component.value[x].code" />
      <min value="1" />
      <patternCode value="mm[Hg]" />
    </element>
  </differential>
</StructureDefinition>