| Sumario: | Background: The challenges of implementing evidence-based palliative care in residential aged care are widely acknowledged. Facilitation is often cited as an effective implementation strategy to address these challenges. However, there is limited guidance on how this strategy applies specifically to this context. Aim: To understand the contextual factors and causal processes (mechanisms) that influence the facilitation of interventions designed to improve palliative care in residential aged care, and to develop a realist programme theory that explains how best to support their implementation. Design: Realist review guided by the RAMESES standards. Protocol is registered on PROSPERO (CRD42023447043). Data sources: MEDLINE, CINAHL and PsycINFO databases were searched for studies on palliative care interventions in residential aged care that used facilitation, published between 2000 and 2024. Data extraction and synthesis followed realist principles to identify context-mechanism-outcome configurations. Results: Twenty-three articles describing 16 palliative care interventions were included in the review. Facilitation was found to be effective when it fostered a shared understanding of the intervention, tailored its components to fit staff workflow and built trust among stakeholders. These processes contributed to normalisation of the intervention and transition of ownership of both the intervention and facilitation process. Proactive support from the facilitator in addition to action learning was most effective at developing learning systems and staff comfort and confidence. Conclusions: The realist programme theory developed in this study provides a foundation for ongoing testing and refinement, with the aim of accelerating evidence uptake by residential aged care staff and ultimately improving palliative care outcomes for residents.
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