description: Defines the additional constraints and extensions on the UK Core Observation Vital Signs profile, for the recording of blood pressure observations
package_name: fhir.r4.ukcore.stu3.currentbuild
derivation: constraint
name: UKCoreObservationVitalSignsBloodPressure
type: Observation
elements:
  code:
    binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure'}
    index: 0
  value:
    choices: []
    index: 2
  method:
    binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-MeasurementMethod'}
    index: 3
  specimen: {index: 4}
  device:
    type: Reference
    refers: ['http://hl7.org/fhir/StructureDefinition/DeviceMetric', 'https://fhir.hl7.org.uk/StructureDefinition/UKCore-Device-BloodPressure']
    index: 5
  component:
    array: true
    min: 1
    max: 2
    index: 6
    slicing:
      rules: closed
      discriminator:
      - {path: code.text, type: value}
      min: 1
      max: 2
      slices:
        SystolicBP:
          match:
            code: {text: null}
          schema:
            _required: true
            index: 7
            elements:
              code:
                binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Systolic'}
                index: 8
              value:
                choices: [valueQuantity]
                index: 10
              valueQuantity: {type: Quantity, choiceOf: value, index: 11}
              value[x]:
                elements:
                  unit:
                    pattern: {type: String, value: millimeter of mercury}
                    index: 12
                  system:
                    pattern: {type: Uri, value: 'http://unitsofmeasure.org'}
                    index: 13
                  code:
                    pattern: {type: Code, value: 'mm[Hg]'}
                    index: 14
            required: [value, valueQuantity]
        DiastolicBP:
          match:
            code: {text: null}
          schema:
            index: 15
            elements:
              code:
                binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Diastolic'}
                index: 16
              value:
                choices: [valueQuantity]
                index: 18
              valueQuantity: {type: Quantity, choiceOf: value, index: 19}
              value[x]:
                elements:
                  unit:
                    pattern: {type: String, value: millimeter of mercury}
                    index: 20
                  system:
                    pattern: {type: Uri, value: 'http://unitsofmeasure.org'}
                    index: 21
                  code:
                    pattern: {type: Code, value: 'mm[Hg]'}
                    index: 22
            required: [value, valueQuantity]
package_version: 0.28.0-pre-release
class: profile
kind: resource
url: https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns-BloodPressure
base: https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns
version: 0.1.1
required: [component]