description: Defines the additional constraints and extensions on the UK Core Observation profile, to record a patients average blood pressure readings for a given time frame.
package_name: fhir.r4.ukcore.stu3.currentbuild
derivation: constraint
name: UKCoreObservationAverageBloodPressure
type: Observation
elements:
  category: {index: 1}
  method:
    binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-MeasurementMethod'}
    index: 8
  specimen: {index: 9}
  value:
    choices: []
    index: 7
  component:
    array: true
    min: 1
    max: 2
    index: 11
    slicing:
      rules: closed
      discriminator:
      - {path: code.text, type: value}
      min: 1
      max: 2
      slices:
        SystolicBP:
          match:
            code: {text: Systolic blood pressure}
          schema:
            _required: true
            index: 12
            elements:
              code:
                elements:
                  coding:
                    binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-AverageSystolic'}
                    index: 13
                  text:
                    pattern: {type: string, value: Systolic blood pressure}
                    type: string
                    index: 14
              value:
                choices: [valueQuantity]
                index: 16
              valueQuantity: {type: Quantity, choiceOf: value, index: 17}
              value[x]:
                elements:
                  unit:
                    pattern: {type: string, value: millimeter of mercury}
                    type: string
                    index: 18
                  system:
                    pattern: {type: uri, value: 'http://unitsofmeasure.org'}
                    type: uri
                    index: 19
                  code:
                    pattern: {type: code, value: 'mm[Hg]'}
                    type: code
                    index: 20
        DiastolicBP:
          match:
            code: {text: Diastolic blood pressure}
          schema:
            index: 21
            elements:
              code:
                elements:
                  coding:
                    binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-AverageDiastolic'}
                    index: 22
                  text:
                    pattern: {type: string, value: Diastolic blood pressure}
                    type: string
                    index: 23
              value:
                choices: [valueQuantity]
                index: 25
              valueQuantity: {type: Quantity, choiceOf: value, index: 26}
              value[x]:
                elements:
                  unit:
                    pattern: {type: string, value: millimeter of mercury}
                    type: string
                    index: 27
                  system:
                    pattern: {type: uri, value: 'http://unitsofmeasure.org'}
                    type: uri
                    index: 28
                  code:
                    pattern: {type: code, value: 'mm[Hg]'}
                    type: code
                    index: 29
  status:
    pattern: {type: code, value: final}
    type: code
    index: 0
  effective:
    choices: []
    index: 5
  code:
    binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Average'}
    index: 2
  device:
    type: Reference
    refers: ['http://hl7.org/fhir/StructureDefinition/DeviceMetric', 'https://fhir.hl7.org.uk/StructureDefinition/UKCore-Device-BloodPressure']
    index: 10
  subject: {index: 3}
package_version: 0.20.0-pre-release
class: profile
kind: resource
url: https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-AverageBloodPressure
base: https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation
version: 1.0.0
required: [category, component, effective, subject]