Relationship between medication errors and adverse drug events

Area of Science:

• Pharmacology
• Patient Safety
• Healthcare Quality Improvement

Background:

• Medication errors pose a significant risk in healthcare settings.
• Understanding the frequency and types of medication errors is crucial for developing effective interventions.
• The association between medication errors and adverse drug events (ADEs) requires thorough investigation.

Purpose of the Study:

• To quantify the incidence of medication errors using a multidisciplinary approach.
• To categorize medication errors by their specific type.
• To determine the frequency of medication errors associated with ADEs and potential ADEs.

Main Methods:

• A multidisciplinary team utilized self-reporting, chart reviews, and medication sheet reviews to identify medication errors.
• Adverse drug events (ADEs) and potential ADEs were identified through spontaneous and solicited reporting, along with daily chart reviews.
• Two independent reviewers classified all identified incidents as ADEs or potential ADEs.

Main Results:

• A total of 530 medication errors were identified from 10,070 medication orders (5.3 errors per 100 orders).
• Missing doses constituted the most frequent error type (53%), followed by dose errors (15%).
• Five ADEs (20% of all ADEs) were linked to medication errors, all deemed preventable; physician computer order entry could have prevented a significant majority of errors.

Conclusions:

• Medication errors are prevalent in clinical practice, though a small proportion directly result in ADEs.
• Preventable medication errors, including those leading to ADEs, can be mitigated through technological solutions like physician computer order entry.
• Improving medication error detection and prevention strategies is essential for enhancing patient safety.