The vulnerabilities of computerized physician order entry systems: a qualitative study.

Area of Science:

• Health Informatics
• Patient Safety
• Clinical Systems

Background:

• Computerized Physician Order Entry (CPOE) systems are critical for medication safety.
• Previous studies indicate CPOE systems can contribute to medication errors.
• Understanding CPOE vulnerabilities is essential for improving healthcare delivery.

Purpose of the Study:

• To evaluate the susceptibility of various CPOE systems to medication errors.
• To identify design improvements for CPOE systems.
• To gain a qualitative understanding of CPOE system weaknesses.

Main Methods:

• Analysis of 63,040 medication error reports from the USP MEDMARX system.
• Testing of 13 commercial and homegrown CPOE systems across 16 sites.
• Inclusion of usual practice and workaround scenarios to identify vulnerabilities.

Main Results:

• CPOE systems frequently failed to prevent significant medication errors.
• Electronic alert generation varied widely and was dependent on order entry methods.
• Confusing alerts and delayed drug-drug interaction warnings were common.
• Workarounds enabling erroneous order entry were identified.

Conclusions:

• Significant variability and deficiencies exist across different CPOE systems.
• CPOE system design requires improvement to incorporate better safeguards.
• Enhanced safeguards are necessary for safer patient prescribing through CPOE.