Retrospective study of medication errors and their impact on the safety of the oncological patient

Background: Medication errors (MEs) are an unintentional failure in the oncological treatment process.The analysis of ME is necessary, since in recent years, there has been a great diversity of cancer therapies.Objective: To identify the factors that predispose and trigger ME in the State Oncological Center ISSEMYM.Method: This was an retrospective cross-sectional study in which the proportion of ME extracted from the database of the clinical pharmacy service during the 2015-2020 period were quantified, classified according to the Ruiz-Garabo update.For the analysis, descriptive statistics were used with frequency values, percentages, and contingency tables with the Chi-square test (χ 2 ) and odds ratio.Results: A total of 10,542 MEs were obtained, of which 7725 were avoided, which shows the importance of the participation of the pharmaceutical staff involved in the pharmacological therapeutic stage.Conclusion: The pharmacist ensures the continuous improvement of the procedures and the guarantee of patient safety oncology.