Healthy Route Implementation Guide, published by Savannah Informatics. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/savannahghi/healthy-route-ig/ and changes regularly. See the Directory of published versions
Extension: Reading Device
| Official URL: https://fhir.savannahghi.org/ig/healthy-route/StructureDefinition/hr-reading-device | Version: 0.1.0 | |||
| Draft as of 2026-10-11 | Computable Name: HRReadingDevice | |||
Which of the study's blood pressure monitors took the reading.
The protocol names two monitors and selects between them by participant size. Which one produced a reading is the first question asked when one site's values sit apart from the others. A reference to a Device resource would say the same, at the cost of a Device the sites would have to register; a code from the monitors the protocol names is enough.
Context of Use
-
Element ID:
Observation
This extension may be used on the following element(s)
Usage info
Usages:
- Use this Extension: Healthy Route Blood Pressure
- Examples for this Extension: Observation/ExampleBloodPressure1, Observation/ExampleBloodPressure2 and Observation/ExampleBloodPressure3
You can also check for usages in the FHIR IG Statistics
Formal Views of Extension Content
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:  |
|---|---|---|---|---|
  Extension |
0..* | Extension | Reading Device | |
  extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.savannahghi.org/ig/healthy-route/StructureDefinition/hr-reading-device" | |
  value[x] |
1..1 | CodeableConcept | Value of extension Binding: Blood Pressure Monitors Value Set (required) | |
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Reading Device | |
 id |
0..1 | id | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them | ||
| url |
1..1 | uri | "https://fhir.savannahghi.org/ig/healthy-route/StructureDefinition/hr-reading-device" | |
| value[x] |
1..1 | CodeableConcept | Value of extension Binding: Blood Pressure Monitors Value Set (required) | |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Reading Device | |
| extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.savannahghi.org/ig/healthy-route/StructureDefinition/hr-reading-device" | |
| value[x] |
1..1 | CodeableConcept | Value of extension Binding: Blood Pressure Monitors Value Set (required) | |
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Reading Device | |
| id |
0..1 | id | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them | ||
| url |
1..1 | uri | "https://fhir.savannahghi.org/ig/healthy-route/StructureDefinition/hr-reading-device" | |
| value[x] |
1..1 | CodeableConcept | Value of extension Binding: Blood Pressure Monitors Value Set (required) | |
| Documentation for this format | ||||
This structure is derived from Extension
Other representations of profile: CSV, Excel, Schematron
Terminology Bindings
| Path | Status | Usage | ValueSet | Version | Source |
| Extension.value[x] | Base | required | Blood Pressure Monitors Value Set | 📦0.1.0 | This IG |
Constraints
| Id | Grade | Path(s) | Description | Expression |