Clinical Decision Support as a Prevention Tool for Medication Errors in the Operating Room: A Retrospective Cross-Sectional Study

BACKGROUND: Medication errors in the operating room have high potential for patient harm. While electronic clinical decision support (CDS) software has been effective in preventing medication errors in many nonoperating room patient care areas, it is not yet widely used in operating rooms. The purpose of this study was to determine the percentage of self-reported intraoperative medication errors that could be prevented by CDS algorithms. METHODS: In this retrospective cross-sectional study, we obtained safety reports involving medication errors documented by anesthesia clinicians between August 2020 and August 2022 at a 1046-bed tertiary care academic medical center. Reviewers classified each medication error by its stage in the medication use process, error type, presence of an adverse medication event, and its associated severity and preventability by CDS. Informational gaps were corroborated by retrospective chart review and disagreements between reviewers were resolved by consensus. The primary outcome was the percentage of errors that were preventable by CDS. Secondary outcomes were preventability by CDS stratified by medication error type and severity. RESULTS: We received 127 safety reports involving 80 medication errors, and 76/80 (95%) of the errors were classified as preventable by CDS. Certain error types were more likely to be preventable by CDS than others (P < .001). The most likely error types to be preventable by CDS were wrong medication (N = 36, 100% rated as preventable), wrong dose (N = 30, 100% rated as preventable), and documentation errors (N = 3, 100% rated as preventable). The least likely error type to be preventable by CDS was inadvertent bolus (N = 3, none rated as preventable). CONCLUSIONS: Ninety-five percent of self-reported medication errors in the operating room were classified as preventable by CDS. Future research should include a randomized controlled trial to assess medication error rates and types with and without the use of CDS.