<Observation xmlns="http://hl7.org/fhir">
  <id value="632" />
  <meta>
    <profile value="http://devices.fhir.org/StructureDefinition/NumericObservation" />
    <profile value="http://hl7.org/fhir/StructureDefinition/oxygensat" />
  </meta>
  <extension url="http://devices.fhir.org/StructureDefinition/observation-measurement-status">
    <valueCode value="questionable" />
  </extension>
  <extension url="http://devices.fhir.org/StructureDefinition/observation-measurement-status">
    <valueCode value="msmt-state-in-alarm" />
  </extension>
  <status value="final" />
  <category>
    <coding>
      <system value="http://hl7.org/fhir/observation-category" />
      <code value="vital-signs" />
      <display value="Vital Signs" />
    </coding>
  </category>
  <code>
    <coding>
      <system value="http://loinc.org" />
      <code value="59408-5" />
      <display value="Oxygen saturation in Arterial blood by Pulse oximetry" />
    </coding>
    <coding>
      <system value="urn:iso:std:iso:11073:10101" />
      <code value="150456" />
      <display value="MDC_PULS_OXIM_SAT_O2" />
    </coding>
  </code>
  <subject>
    <reference value="Patient/371" />
  </subject>
  <effectiveDateTime value="2017-06-02T11:04:48+02:00" />
  <valueQuantity>
    <value value="88" />
    <unit value="%" />
    <system value="http://unitsofmeasure.org" />
    <code value="%" />
  </valueQuantity>
  <device>
    <reference value="DeviceMetric/222" />
  </device>
</Observation>