RESUMO
INTRODUCTION: older adults are at risk of adverse outcomes due to a high prevalence of polypharmacy and potentially inappropriate medications (PIMs). Deprescribing interventions have been demonstrated to reduce polypharmacy and PIMs. However, deprescribing is not performed routinely in long-term care facilities (LTCFs). This qualitative evidence synthesis aims to identify the factors which limit and enable health care workers' (HCWs) engagement with deprescribing in LTCFs. METHODS: the 'best-fit' framework approach was used to synthesise evidence by using the Theoretical Domains Framework (TDF) as the a priori framework. Included studies were analysed qualitatively to identify LTCF barriers and enablers of deprescribing and were mapped to the TDF. Constructs within domains were refined to best represent the LTCF context. A conceptual model was created, hypothesising relationships between barriers and enablers. RESULTS: of 655 records identified, 14 met the inclusion criteria. The 'best-fit' framework included 17 barriers and 16 enablers, which mapped to 11 of the 14 TDF domains. Deprescribing barriers included perceptions of an 'established hierarchy' within LTCFs, negatively affecting communication and insufficient resources which limited HCWs' engagement with deprescribing. Enablers included tailored deprescribing guidelines, interprofessional support and working with a patient focus, allowing the patients' condition to influence decisions. DISCUSSION: this study identified that education, interprofessional support and collaboration can facilitate deprescribing. To overcome deprescribing barriers, change is required to a patient-centred model and HCWs need to be equipped with necessary resources and adequate reimbursement. The LTCF organisational structure must support deprescribing, with communication between health care systems.