In this section we present a number of examples of CDS rules, using the 'ON event IF condition THEN action' pattern described in section 3.1. Rules.
This simple CDS rule was designed to be used during a clinical encounter. If the patient is diagnosed with asthma, the appropriate management guidelines are automatically displayed on the clinician's workstation.
This rule demonstrates the use of a single event, criterion, and action, an expression constraint in the criterion value, and use of the default context. |
This rule has been designed to be used when ordering a medication. If the patient is and the drug has an active ingredient of
, the clinician will be alerted and the CDSS will suggest an alternative blood thinner which does not pose a risk for expectant mothers.
This rule demonstrates the use of multiple criteria, multiple actions, expression constraints in the criterion value, and use of the default context. |
Emergency Department
The following example is a CDS rule designed to be used in an Emergency Department setting, when a patient has presented in the ER with chest pain. In this scenario, the attending physician may order a . If the patient is currently taking a medication with an active ingredient of
, and the lab result is published indicating that the patient's potassium level is less than 3.0 mmol/L, the attending physician will be paged.
This rule demonstrates the use of multiple criteria, expression constraints in the criterion value, a non-coded criterion with a mathematical operator, and use of the default context. |