Experience with Migrating an Expert System from Batch to Real-Time

The second task was the development of a continuous monitor which would decide when and what data to screen. We devised a process whereby all drug orders are queued to be screened as soon as they are stored into the data mart. When new non-drug, pertinent information is stored into the data mart (e.g. age, weight, height, labs) all future and active drug orders for that patient are queued to be screened. Once an order was queued, it is screened once all relevant data was available or a specified time period pasted. The time periods were related to priorities that the pharmacists assigned to the various drug rules.