## Finnish PHR Heart Rate Rhythm extension

The Finnish PHR Heart Rate Rhythm extension extends FHIR® [Observation](http://hl7.org/fhir/observation.html "Observation") resource with boolean information telling is the heart rate rhytm regular (true) or irregular (false) during the measurement.

|The official URL for this profile is:|
|-
|http://phr.kanta.fi/StructureDefinition/fiphr-boolean-stu3 |
|http://phr.kanta.fi/StructureDefinition/fiphr-heartraterhythm-stu3 |

The extension is used in these profiles:
- Finnish PHR Heart Rate profile