Biomedical Engineering Reference
In-Depth Information
Figure 20.3
HL7 V3.x CDA sample
meaningful analytics from them. In order to do analytical analysis, these
data need to be in a machine-understandable format. Subsequently, the
data can be stored in discrete chunks by a computer in a format that has
one and only one semantic meaning. The CDA is meant to solve this
problem by providing a way to exchange clinical documentation and
retain both the narrative text and the machine-understandable format.
Figure 20.3 shows an example of a portion of a CDA document.
The message is made from a number of components highlighted in the
fi gure:
1. the patient record from HL7 V2.x in the V3 format for CDA;
2. the section of this document has a title of Allergies and a text
indicating a patient allergy. This is narrative for human use;
3. the machine-processable portion, beginning with an observation;
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