<Observation xmlns="http://hl7.org/fhir">
    <id value="622" />
    <meta>
        <profile value="http://devices.fhir.org/StructureDefinition/NumericObservation" />
    </meta>
    <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="8867-4" />
            <display value="Heart rate" />
        </coding>
        <coding>
            <system value="urn:iso:std:iso:11073:10101" />
            <code value="147842" />
            <display value="MDC_ECG_CARD_BEAT_RATE" />
        </coding>
    </code>
    <subject>
        <reference value="Patient/371" />
    </subject>
    <effectiveDateTime value="2017-06-02T11:04:46+02:00" />
    <valueQuantity>
        <value value="60" />
        <unit value="bpm" />
        <system value="http://unitsofmeasure.org" />
        <code value="/min" />
    </valueQuantity>
    <device>
        <reference value="DeviceMetric/215" />
    </device>
</Observation>