<status value="draft" /> <date value="2025-11-06" /> <publisher value="HL7 UK" /> <contact> <name value="HL7 UK" /> <telecom> <system value="email" /> <value value="ukcore@hl7.org.uk" /> <use value="work" /> <rank value="1" /> </telecom> </contact> <description value="Defines the additional constraints and extensions on the UK Core Observation Vital Signs profile, for the recording of blood pressure observations" /> <purpose value="To provide implementers with additional support when implementing blood pressure monitoring and to provide a consistent structure to how the data is presented." /> <copyright value="Copyright © 2021+ HL7 UK Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. HL7® FHIR® standard Copyright © 2011+ HL7 The HL7® FHIR® standard is used under the FHIR license. You may obtain a copy of the FHIR license at https://www.hl7.org/fhir/license.html." /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="Observation" /> <baseDefinition value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns" /> <derivation value="constraint" /> <differential> <element id="Observation.code"> <path value="Observation.code" /> <binding> <strength value="preferred" /> <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure" /> </binding> </element> <element id="Observation.value[x]"> <path value="Observation.value[x]" /> <max value="0" /> </element> <element id="Observation.method"> <path value="Observation.method" /> <binding> <strength value="preferred" /> <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-MeasurementMethod" /> </binding> </element> <element id="Observation.specimen"> <path value="Observation.specimen" /> <max value="0" /> </element> <element id="Observation.device"> <path value="Observation.device" /> <type> <code value="Reference" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/DeviceMetric" /> <targetProfile value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Device-BloodPressure" /> </type> </element> <element id="Observation.component"> <path value="Observation.component" /> <slicing> <discriminator> <type value="value" /> <path value="code.text" /> </discriminator> <rules value="closed" /> </slicing> <min value="1" /> <max value="2" /> </element> <element id="Observation.component:SystolicBP"> <path value="Observation.component" /> <sliceName value="SystolicBP" /> <min value="1" /> <max value="1" /> </element> <element id="Observation.component:SystolicBP.code"> <path value="Observation.component.code" /> <binding> <strength value="preferred" /> <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Systolic" /> </binding> </element> <element id="Observation.component:SystolicBP.value[x]"> <path value="Observation.component.value[x]" /> <min value="1" /> <type> <code value="Quantity" /> </type> </element> <element id="Observation.component:SystolicBP.value[x].unit"> <path value="Observation.component.value[x].unit" /> <fixedString value="millimeter of mercury" /> </element> <element id="Observation.component:SystolicBP.value[x].system"> <path value="Observation.component.value[x].system" /> <fixedUri value="http://unitsofmeasure.org" /> </element> <element id="Observation.component:SystolicBP.value[x].code"> <path value="Observation.component.value[x].code" /> <fixedCode value="mm[Hg]" /> </element> <element id="Observation.component:DiastolicBP"> <path value="Observation.component" /> <sliceName value="DiastolicBP" /> <max value="1" /> </element> <element id="Observation.component:DiastolicBP.code"> <path value="Observation.component.code" /> <binding> <strength value="preferred" /> <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Diastolic" /> </binding> </element> <element id="Observation.component:DiastolicBP.value[x]"> <path value="Observation.component.value[x]" /> <min value="1" /> <type> <code value="Quantity" /> </type> </element> <element id="Observation.component:DiastolicBP.value[x].unit"> <path value="Observation.component.value[x].unit" /> <fixedString value="millimeter of mercury" /> </element> <element id="Observation.component:DiastolicBP.value[x].system"> <path value="Observation.component.value[x].system" /> <fixedUri value="http://unitsofmeasure.org" /> </element> <element id="Observation.component:DiastolicBP.value[x].code"> <path value="Observation.component.value[x].code" /> <fixedCode value="mm[Hg]" /> </element> </differential> </StructureDefinition>