Impact of computerized provider order entry on medication errors in outpatient chemotherapy administration.

Abstract

295 Background: Computerized provider order entry (CPOE) reduces medication errors (ME) in ambulatory and hospital settings. We conducted a study to assess the effect of CPOE on ME in an outpatient NCI designated infusion center (IC). Methods: Both actual and prevented ME were prospectively reported by clinical staff as part of IC Standard Operating Procedure using the electronic Quality Variance Reporting (eQVR, Incident Reporting 2.0, University of California) system. Reported ME from 10/2007 to 03/2011 were reviewed by 2 investigators and classified into categories by consensus: wrong medication given (WM), medication missed (MM), wrong timing/rate (T/R), wrong dose (WD), unmet chemotherapy parameters (UP) and other (O). Classifications were further categorized by preventable or facilitated by CPOE. We compared ME 18 mo. pre and post implementation. The 6 month go live period was reviewed separately to examine ME related to a learning curve (LC). Results: 40,366 patients were seen pre-implementation, 47,460 post, and 14,343 during go live. The total ME per pt was similar pre and post (see table). There were dramatic rate differences in WM and MM, but no effect on T/R, WD, UP. In the pre period 66% of ME were felt preventable by CPOE. In turn 35% of ME were facilitated by CPOE. Preventability rates differed between categories. During go live 100% of CPOE facilitated ME were related to user and designer LC. Post implementation 58% of CPOE facilitated ME were still accounted by LC with the rest felt related to the complexity of CPOE. Conclusions: ME are rare in our outpatient IC. CPOE did not change the total number of ME but significantly decreased the rate of WM. Complexities of CPOE resulted in increased MM. LC related errors still occur 24 mo. after implementation of CPOE and require constant monitoring and education. CPOE increased the rate of serious ME felt due to the change in workflow and adding an extra layer of complexity. Human errors cannot be fixed with CPOE and generally encompassed the ME in T/R, WD, and UP classifications [Table: see text]