Evaluation of Discrepancies Identified in Medication Reconciliation at Admission and Discharge of Older Patients in a Hospital Ward

The aging population, often burdened with multimorbidity and polypharmacy complexities, requires comprehensive care during healthcare transitions. These transitions contribute to increased prescriptions, exacerbating polypharmacy and frailty in older individuals. Medication reconciliation, a preventive strategy, optimizes medication lists through systematic analysis, particularly benefiting older patients grappling with polypharmacy. This practice holds substantial potential in enhancing patient safety during care transitions. Therefore, the aim of this study is to evaluate the discrepancies detected during the practice of medication reconciliation at the admission, discharge, or transfer of older individuals in a ward in Brazil. This is a single-cohort study of patients admitted to an older adult care ward in Brazil, monitored from September 2021 to April 2022. Older individuals hospitalized in the ward, exhibiting the characteristic clinical profile of multimorbidity and polypharmacy, were observed to identify discrepancies in the practice of medication reconciliation conducted as part of pharmaceutical care services. Medication reconciliation was carried out upon admission, discharge from the ward for older adult care, or transfer to other healthcare units. Sixty older individuals were monitored during the study period in the ward. The use of polypharmacy at home was evident in more than 70% of patients, and multimorbidity was present in over 90% of patients. On average, 8.6 discrepancies were identified per patient (± 4.7). Upon admission to the older adult care ward, 501 discrepancies were identified and assessed, decreasing to 200 at the time of hospital discharge or transfer to other units. In total, 48 medication errors were identified in the evaluated prescriptions and ongoing pharmacotherapy. The use of polypharmacy proved to be a contributing factor that increased the identification of discrepancies in medication reconciliation (p < 0.001). Analyzing medication reconciliation discrepancies uncovers intentional and unintentional aspects in prescriptions, with medication quantity, especially in polypharmacy, linked to potential harm. Continuous monitoring proved crucial, significantly enhancing patient safety in the older adult care ward.