The impact of computerization on medication discrepancies in a centralized unit dose drug distribution system.

A missing dose audit was conducted to evaluate the impact of computerization of a centralized unit dose drug distribution system on the number and source of medication discrepancies. The methodology used was the same as that used for a previous audit done before computerization. The cardiology and coronary care nursing units participated in the 12 day study. The pharmacy auditor and the nurse compared the contents of each patient's medication bin to the nursing profile daily. All discrepancies were documented, investigated, and resolved. All missing dose phone calls were recorded and evaluated. The results were compared to the results of the previous audit. The results of this audit showed that after computerization there was a 17% reduction in medication discrepancies and a 41% decrease in the number of phone calls received for missing doses. The audit uncovered additional areas where further change may be beneficial.