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How many hospital pharmacy medication dispensing errors go undetected?
Jennifer L Cina1, Tejal K Gandhi, William Churchill
1Brigham and Women's Hospital, Boston, USA. jcina@partners.org
Joint Commission Journal on Quality and Patient Safety
|March 30, 2006
Summary
Hospital pharmacy dispensing errors occur frequently, with 3.6% of doses containing mistakes. A significant portion of these errors, if undetected, pose serious risks of adverse drug events (ADEs) to patients.
Area of Science:
- Pharmacy Practice
- Patient Safety
- Medication Error Research
Background:
- Hospital pharmacies are critical for dispensing numerous medication doses to inpatients.
- Medication dispensing errors represent a significant concern within hospital pharmacy operations.
Purpose of the Study:
- To characterize the incidence and severity of medication dispensing errors in a hospital pharmacy setting.
- To evaluate the effectiveness of current verification processes in detecting dispensing errors.
Main Methods:
- Direct observation of medication dispensing processes by pharmacy technicians.
- Physician panel review to assess the severity of identified dispensing errors.
Main Results:
- A 3.6% error rate was observed across 140,755 dispensed medication doses.
- Pharmacist verification failed to detect 21% of errors, potentially leading to undetected dispensing errors.
- 23.5% of undetected errors were potential adverse drug events (ADEs), with 28% classified as serious and 0.8% as life-threatening.
Conclusions:
- Even low error rates in high-volume dispensing systems can result in a substantial number of potentially harmful medication errors.
- Enhancements in pharmacy distribution systems are crucial for improving patient safety and reliability.