## DeviceMetric Profiles
### Scope and Usage
These DeviceMetric profiles are part of the Point-of-Care Device General Implementation Guide. A set of DeviceMetric resources represent measurements, calculations, status, and settings of a medical device.

A compliant device shall have [DeviceMetric](http://hl7.org/fhir/devicemetric.html) resources according to the Numeric, Enumeration, and Sample Array DeviceMetric profiles. The profiles define the following rules:
* `DeviceMetric.type` shall have a coding from the ISO/IEEE 11073 MDC metrics nomenclature. The [Rosetta Terminology Mapping Management System](https://rtmms.nist.gov/rtmms/index.htm) (RTMMS) lists available codes. `DeviceMetric.type.coding` allows additional coding from other code systems.
* `DeviceMetric.unit` is optional for Numeric and Sample Array DeviceMetric resources. If present, it shall have a coding from the ISO/IEEE 11073 MDC units of measurement. `DeviceMetric.unit.coding` allows additional coding from other code systems.
* `DeviceMetric.source` shall be present and refer to a Device resource according to the PoC Device profile.
* `DeviceMetric.parent` shall be present and refer to the Channel DeviceComponent resource where this metric belongs to.

### Content
|StructureDefinition|Description|Example|
|---|---|---|
|{{link:DoF-PoCD/NumericDeviceMetric}}|Characteristics and operational status of a numerical measurement, calculation, or setting|{{link:DoF-PoCD/NBPNumericDeviceMetric-example}}|
|{{link:DoF-PoCD/EnumerationDeviceMetric}}|Characteristics and operational status of status or annotation information as codes or text|{{link:DoF-PoCD/RhythmStatusEnumerationDeviceMetric-example}}|
|Sample Array DeviceMetric Profile *(to be completed)* |Characteristics and operational status of a real-time waveform or wave snippet| |