Analysis of allergy alerts within a computerized prescriber-order-entry system.

Area of Science:

• Health Informatics
• Clinical Decision Support
• Patient Safety

Background:

• Computerized prescriber-order-entry (CPOE) systems aim to improve medication safety.
• Allergy alerts are a key feature of CPOE systems to prevent adverse drug events.
• Understanding the frequency and reasons for overriding allergy alerts is crucial for system optimization.

Purpose of the Study:

• To analyze the frequency of allergy alerts generated by a CPOE system.
• To evaluate the reasons for overriding these allergy alerts.
• To assess the impact of allergy alerts on clinical workflow.

Main Methods:

• Retrospective analysis of inpatient CPOE orders over one month.
• Extracted data on total orders, allergy alerts, and override rationales.
• Descriptive statistics were used to summarize alert and override data.

Main Results:

• Allergy alerts were triggered on 1.3% of 49,887 total CPOE orders.
• 97% of allergy alerts were overridden by prescribers.
• Common override rationales included prior patient tolerance (49%) and benefit outweighing risk (29%).

Conclusions:

• A small percentage of CPOE orders trigger allergy alerts.
• The high override rate suggests potential for alert fatigue or system misconfiguration.
• Further investigation is needed to optimize CPOE allergy alert effectiveness.