• Ramez Maximous, Jean Wong, Frances Chung, and Amir Abrishami.
• Faculty of Medicine, University of Ottawa, Roger Guindon Hall, 451 Symth Road #2044, Ottawa, ON, K1H 8M5, Canada. rmaxi036@uottawa.ca.
• Can J Anaesth. 2021 Jun 1; 68 (6): 880893880-893.

BackgroundThe objective of this study was to provide a synthesis of the interventions designed to reduce medication errors in anesthetized patients.MethodsWe electronically searched major databases using index and free-text keywords related to anesthesia and medication errors. We included cohort studies exploring interventions to reduce anesthetic medication errors in both adult and pediatric patients. The risk of bias for each study was assessed using the Newcastle-Ottawa Scale.ResultsOne thousand five-hundred and fifty-eight titles or abstracts were screened, and 56 full-text studies were assessed for eligibility; eight studies were included in the final analysis. Case reports and retrospective studies were excluded. The quality of most studies (n = 6) was graded as "low". There were three categories of interventions: I) multimodal interventions (6 studies, n = 900,170 medication administrations) showed a reduction in rates of errors of 21-35% per administration and 37-41% per anesthetic; II) improved labels (1 study, n = 55,426 medication administrations) resulted in a 37% reduction in rates of errors per anesthetic; and III) the effect of education was assessed in one study and showed no effect.ConclusionMultimodal interventions and improved labelling reduce medication errors in anesthetized patients.

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