# Heart Rate Numeric metric example - Point-of-Care Device Implementation Guide v1.0.0

* [**Table of Contents**](toc.md)
* [**Artifact List**](artifacts.md)
* **Heart Rate Numeric metric example**

## Example DeviceMetric: Heart Rate Numeric metric example

| |
| :--- |
| *Page standards status:*[Informative](http://hl7.org/fhir/R4/versions.html#std-process) |

Profile: [Numeric DeviceMetric profile](StructureDefinition-NumericDeviceMetric.md)

> **Relation extension**
* kind: DCE
* entries: [DeviceMetric: extension = 0.001,25 mm/s; type = MDC_ECG_ELEC_POTL; unit = MDC_DIM_MILLI_VOLT; operationalStatus = on; color = green; category = measurement](DeviceMetric-ECGSampleArrayDeviceMetric.md)

> **Technical range extension**
* lowerLimit: 0
* upperLimit: 200
* stepWidth: 1
* relativeAccuracy: 0.01
* absoluteAccuracy: 0.01

> **Reference range extension**
* type: Alarm limits
* low: 40 bpm (Details: unknown code264864 = 'MDC_DIM_BEAT_PER_MIN')
* high: 180 bpm (Details: MDC Nomenclature code264864 = 'MDC_DIM_BEAT_PER_MIN')

**type**: HR

**unit**: bpm

**source**: [Device: extension = ,->Practitioner Alice B. Careful ,8760,156,Dmo; identifier = urn:oid:1.2.840.10004.1.1.1.0.0.1.0.0.1.2680#01-23-45-67-89-AB-CD-EF; status = active; manufacturer = MyCompany; serialNumber = 123456; modelNumber = PM1; type = MDC_DEV_MON_PHYSIO_MULTI_PARAM_MDS](Device-PhysioMonitorMdsDevice.md)

**parent**: [Device: status = active; type = MDC_DEV_CARD_RATE_CHAN](Device-HeartRateChannelDevice.md)

**operationalStatus**: On

**color**: Color Green

**category**: Measurement



## Resource Content

```json
{
  "resourceType" : "DeviceMetric",
  "id" : "HeartRateNumericDeviceMetric",
  "meta" : {
    "profile" : ["http://hl7.org/fhir/uv/pocd/StructureDefinition/NumericDeviceMetric"]
  },
  "extension" : [{
    "url" : "http://hl7.org/fhir/uv/pocd/StructureDefinition/relation",
    "extension" : [{
      "url" : "kind",
      "valueCode" : "DCE"
    },
    {
      "url" : "entries",
      "valueReference" : {
        "reference" : "DeviceMetric/ECGSampleArrayDeviceMetric"
      }
    }]
  },
  {
    "url" : "http://hl7.org/fhir/uv/pocd/StructureDefinition/technical-range",
    "extension" : [{
      "url" : "lowerLimit",
      "valueDecimal" : 0
    },
    {
      "url" : "upperLimit",
      "valueDecimal" : 200
    },
    {
      "url" : "stepWidth",
      "valueDecimal" : 1
    },
    {
      "url" : "relativeAccuracy",
      "valueDecimal" : 0.01
    },
    {
      "url" : "absoluteAccuracy",
      "valueDecimal" : 0.01
    }]
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/reference-range",
    "extension" : [{
      "url" : "type",
      "valueCodeableConcept" : {
        "coding" : [{
          "system" : "http://hl7.org/fhir/uv/pocd/CodeSystem/reference-range-type",
          "code" : "alarm-limits",
          "display" : "Alarm limits"
        }]
      }
    },
    {
      "url" : "low",
      "valueQuantity" : {
        "value" : 40,
        "unit" : "bpm",
        "system" : "urn:iso:std:iso:11073:10101",
        "code" : "264864"
      }
    },
    {
      "url" : "high",
      "valueQuantity" : {
        "value" : 180,
        "unit" : "bpm",
        "system" : "urn:iso:std:iso:11073:10101",
        "code" : "264864"
      }
    }]
  }],
  "type" : {
    "coding" : [{
      "system" : "urn:iso:std:iso:11073:10101",
      "code" : "147842",
      "display" : "MDC_ECG_HEART_RATE"
    }],
    "text" : "HR"
  },
  "unit" : {
    "coding" : [{
      "system" : "urn:iso:std:iso:11073:10101",
      "code" : "264864",
      "display" : "MDC_DIM_BEAT_PER_MIN"
    }],
    "text" : "bpm"
  },
  "source" : {
    "reference" : "Device/PhysioMonitorMdsDevice"
  },
  "parent" : {
    "reference" : "Device/HeartRateChannelDevice"
  },
  "operationalStatus" : "on",
  "color" : "green",
  "category" : "measurement"
}

```
