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EHR System Component

Description

User Interface

The user interface (UI) is a fundamental component of almost any clinical application, and is used within an EHR to both enter and display patient health records. The UI also has two main CDS functions. Firstly, the UI is used to provide inputs to the CDSS, such as recording a proposed medication or an observed finding. The second function of the UI is to display alerts, advisories and clinical guidelines to the user in an appropriate format, on behalf of the CDSS.

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Record Services

Record services are a set of services for managing patient health records. Record services provide functions like entering data into health records, searching for and retrieving health records, querying or extracting data from health records, and communicating or exchanging health records with other systems or applications. Record services interact with other components in this model such as the CDSS and the UI.

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Terminology Services

Terminology services are those services that directly manage the terminology resources. They include functions like querying concepts, relationships and reference sets, and installing or updating SNOMED CT from release files. Terminology services interact with the CDSS component in this model.

Clinical Decision Support System

The primary role of the CDSS is to execute the decision support logic. The CDSS does this using a number of subcomponents and subprocesses, which will be described in the next section - Logical Architecture of a CDSS . The CDSS interacts with each of the other major components in the EHR.

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