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low- the lower end of the rangehigh- the higher end of the rangetype- the type of measurement range
Absolute Measurement Ranges
In the figure below, example measurement ranges have been given as absolute measurement ranges. Absolute measurement ranges are always given in the same unit as measured/submitted values.
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The normal range shown in green with dotted outline is currently not supported. Definition of normal measurement ranges would allow for more credible statements about measured (and submitted) values. |
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Relative Measurement Ranges
In the figure below, example measurement ranges have been given as relative measurement ranges. Relative measurement ranges can be given:
as percentage change
as unit percent if measured/submitted values are not already given as percent.
as unit percent point if measured/submitted values are already given as percent.
as same unit as measured/submitted values
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The normal range shown in green with dotted outline is currently not supported. Definition of normal measurement ranges would allow for more credible statements about measured (and submitted) values. |
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Measurement Range Overlaps
Certain consideration should be made when maintaining measurement ranges in the eHealth Infrastructure. For the current list of allowed measurement range types, some can overlap and some typically should not, or at least only at their low or high bounds.
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In principle, each measurement range can be well-defined in itself. Also in principle, it should be possible to state facts and perform triaging simply by comparing a measured, submitted value against all the corresponding measurement ranges. For instance, a submitted value of 75.0 kg could be stated to:
be within the absolute measurement range for yellow alarm
be within the absolute measurement range for red alarm
be outside the absolute, normal measurement range
This could be triaged by creating:
a Task with priority corresponding to red alarm
a Task with priority corresponding to yellow alarm
The measurement ranges shown above overlap in boundaries only. It is up to the clinician's discretion whether to allow overlaps beyond boundaries.
- Measurement Range Boundary Overlap Only. It is expected that, within the same reference range type, overlaps occur for boundaries only.
- Relative Measurement Range Boundary Overlap Only per Unit. It is expected that relative measurement ranges, although they might overlap if defined as both percentage and in same unit as submitted values, will overlap per measurement range unit for boundaries only.
Handling of Boundary Overlaps
In automated rules (See Processing of Automated Processing Rules), boundary overlaps shall, unless stated explicitly otherwise, be handled by choosing the worst-case situation. For the above submitted value of 75.0 kg, such preference results in:
stating that the (submitted) is within the absolute measurement range for red alarm
stating that the (submitted) is outside the absolute, normal measurement range
a Task with priority corresponding to red alarm
Handling of non-Boundary Overlaps
Automated rules (See Processing of Automated Processing Rules), does not handle non-boundary overlaps in measurement ranges, unless stated explicitly otherwise.