Peripheral oxygen saturation


PARAMETER CASE REPORT FORM RESPONSE OPTIONS
Peripheral oxygen saturation ☐ %

In addition to LOINC, Observation.code contains an exemplary SNOMED-CT coding.

Observation.valueQuantity has a fixed UCUM-unit of %.


This profile of a FHIR Observation is derived from the Oxygen saturation-profile of the FHIR R4 core specification.

Profile - Oxygen Saturation

Canonical: https://www.netzwerk-universitaetsmedizin.de/fhir/StructureDefinition/oxygen-saturation

Snapshot

identifierΣ0..*Identifier
basedOnΣ I0..*Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)
partOfΣ I0..*Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)
statusS Σ ?!1..1codeBinding
vs-cat1..1CodeableConceptBinding
systemΣ1..1uri
versionΣ0..1string
codeΣ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
systemΣ1..1uri
versionΣ0..1string
codeΣ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
textΣ0..1string
subjectS Σ I1..1Reference(Patient)
focusΣ I0..*Reference(Resource)
encounterΣ I0..1Reference(Encounter)
effectiveDateTimedateTime
effectivePeriodPeriod
issuedΣ0..1instant
performerΣ I0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)
valueS Σ1..1decimal
comparatorΣ ?!0..1codeBinding
unitS Σ1..1string
systemS Σ I1..1uri
codeS Σ1..1code
dataAbsentReasonS I0..1CodeableConceptBinding
interpretation0..*CodeableConceptBinding
note0..*Annotation
bodySite0..1CodeableConcept
method0..1CodeableConcept
specimenI0..1Reference(Specimen)
deviceI0..1Reference(Device | DeviceMetric)
lowI0..1SimpleQuantity
highI0..1SimpleQuantity
type0..1CodeableConceptBinding
appliesTo0..*CodeableConcept
ageI0..1Range
text0..1string
hasMemberΣ I0..*Reference(Observation | QuestionnaireResponse | MolecularSequence)
derivedFromΣ I0..*Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence)
codeΣ1..1CodeableConcept
valueQuantityQuantity
valueCodeableConceptCodeableConcept
valueStringstring
valueBooleanboolean
valueIntegerinteger
valueRangeRange
valueRatioRatio
valueSampledDataSampledData
valueTimetime
valueDateTimedateTime
valuePeriodPeriod
dataAbsentReasonI0..1CodeableConceptBinding
interpretation0..*CodeableConceptBinding
referenceRange0..*see (referenceRange)


Blood Gas Analysis

Oxygen saturation may be part of a blood gas analysis. Thus, there is an additonal profile that can be used for observation grouping.

Observation.code contains three exemplary LOINC codings for gas panel of blood, arterial blood or capillary blood.

Observation.hasMember references the resources that belong to this panel, e.g. pH, PaCO2, PO2 or oxygen saturation.

The LOINC system in Observation.code, i.e. blood, arterial blood, capillary blood, shall match the LOINC system in Observation.code of the member observation.

Snapshot

Canonical: https://www.netzwerk-universitaetsmedizin.de/fhir/StructureDefinition/blood-gas-panel

useΣ ?!0..1codeBinding
systemS Σ1..1uriFixed Value
versionΣ0..1string
codeS Σ1..1codeFixed Value
displayΣ0..1string
userSelectedΣ0..1boolean
textΣ0..1string
systemS Σ1..1uri
valueS Σ1..1string
periodΣ I0..1Period
assignerS Σ I1..1MII-Reference(Organization)
basedOnΣ I0..*Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)
partOfΣ I0..*Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)
statusS Σ ?!1..1codeBinding
systemS Σ1..1uri
versionΣ0..1string
codeS Σ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
systemS Σ1..1uri
versionΣ0..1string
codeS Σ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
systemS Σ1..1uri
versionΣ0..1string
codeS Σ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
textΣ0..1string
systemΣ1..1uri
versionΣ0..1string
codeΣ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
systemΣ1..1uri
versionΣ0..1string
codeΣ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
systemΣ1..1uri
versionΣ0..1string
codeΣ1..1code
displayΣ0..1string
userSelectedΣ0..1boolean
textΣ0..1string
subjectS Σ I0..1Reference(Patient | Group | Device | Location)
focusΣ I0..*Reference(Resource)
encounterΣ I0..1Reference(Encounter)
effectiveDateTimedateTime
effectivePeriodPeriod
effectiveTimingTiming
effectiveInstantinstant
issuedΣ0..1instant
performerΣ I0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)
dataAbsentReasonI0..1CodeableConceptBinding
interpretation0..*CodeableConceptBinding
note0..*Annotation
bodySite0..1CodeableConcept
method0..1CodeableConcept
specimenI0..1Reference(Specimen)
deviceI0..1Reference(Device | DeviceMetric)
lowI0..1SimpleQuantity
highI0..1SimpleQuantity
type0..1CodeableConceptBinding
appliesTo0..*CodeableConcept
ageI0..1Range
text0..1string
hasMemberS Σ I1..*Reference(pH | PaCO2 | PaO2 | Oxygen Saturation | FiO2)
derivedFromΣ I0..*Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence)
codeΣ1..1CodeableConcept
valueQuantityQuantity
valueCodeableConceptCodeableConcept
valueStringstring
valueBooleanboolean
valueIntegerinteger
valueRangeRange
valueRatioRatio
valueSampledDataSampledData
valueTimetime
valueDateTimedateTime
valuePeriodPeriod
dataAbsentReasonI0..1CodeableConceptBinding
interpretation0..*CodeableConceptBinding
referenceRange0..*see (referenceRange)


Examples

Oxygen Saturation
Example observation oxygen saturation

{
    "resourceType": "Observation",
    "id": "oxygen-saturation",
    "meta": {
        "profile":  [
            "https://www.netzwerk-universitaetsmedizin.de/fhir/StructureDefinition/oxygen-saturation"
        ]
    },
    "category":  [
        {
            "coding":  [
                {
                    "code": "vital-signs",
                    "system": "http://terminology.hl7.org/CodeSystem/observation-category"
                }
            ]
        }
    ],
    "code": {
        "coding":  [
            {
                "code": "2708-6",
                "system": "http://loinc.org",
                "display": "Oxygen saturation in Arterial blood"
            }
        ],
        "text": "Oxygen saturation in Arterial blood"
    },
    "valueQuantity": {
        "system": "http://unitsofmeasure.org",
        "code": "%",
        "value": 98,
        "unit": "%"
    },
    "identifier":  [
        {
            "type": {
                "coding":  [
                    {
                        "code": "OBI",
                        "system": "http://terminology.hl7.org/CodeSystem/v2-0203"
                    }
                ]
            },
            "system": "https://www.charite.de/fhir/CodeSystem/lab-identifiers",
            "value": "2708-6_oxygenSaturation",
            "assigner": {
                "reference": "Organization/Charité"
            }
        }
    ],
    "status": "final",
    "subject": {
        "reference": "Patient/gecco-patient"
    },
    "effectiveDateTime": "2020-09-21"
}


Gas Panel Arterial Blood
This observation can be part of a gas panel via the hasMember element.

{
    "resourceType": "Observation",
    "id": "oxygen-saturation-pulse-oximetry",
    "meta": {
        "profile":  [
            "https://www.netzwerk-universitaetsmedizin.de/fhir/StructureDefinition/oxygen-saturation"
        ]
    },
    "category":  [
        {
            "coding":  [
                {
                    "code": "vital-signs",
                    "system": "http://terminology.hl7.org/CodeSystem/observation-category"
                }
            ]
        }
    ],
    "code": {
        "coding":  [
            {
                "code": "2708-6",
                "system": "http://loinc.org",
                "display": "Oxygen saturation in Arterial blood"
            },
            {
                "code": "442476006",
                "system": "http://snomed.info/sct",
                "display": "Arterial oxygen saturation"
            },
            {
                "code": "59408-5",
                "system": "http://loinc.org",
                "display": "Oxygen saturation in Arterial blood by Pulse oximetry"
            },
            {
                "code": "431314004",
                "system": "http://snomed.info/sct",
                "display": "Peripheral oxygen saturation"
            }
        ],
        "text": "Pulsoximetrische Sauerstoffsättigung"
    },
    "valueQuantity": {
        "system": "http://unitsofmeasure.org",
        "code": "%",
        "value": 98,
        "unit": "%"
    },
    "status": "final",
    "subject": {
        "reference": "Patient/example"
    },
    "effectiveDateTime": "2020-10-11"
}