Sepsis screening protocol implementation: a clinician-validated rapid realist review

Abstract

Introduction: The failed or partial implementation of clinical practices negatively impacts patient safety and increases systemic inefficiencies. Implementation of sepsis screening guidelines has been undertaken in many settings with mixed results. Without a theoretical understanding of what leads to successful implementation, improving implementation will continue to be ad hoc or intuitive. This study proposes a programme theory for how and why the successful implementation of sepsis screening guidelines can occur.

Methods: A rapid realist review was conducted to develop a focused programme theory for the implementation of sepsis screening guidelines. An independent two-reviewer approach was used to iteratively extract and synthesise context and mechanism data. Theoretical context-mechanism-outcome propositions were refined and validated by clinicians using a focus group and individual realist interviews. Implementation resources and clinical reasoning were differentiated in articulating mechanisms.

Results: Eighteen articles were included in the rapid review. The theoretical domains framework was identified as the salient substantive theory informing the programme theory. The theory consisted of five main middle-range propositions. Three promoting mechanisms included positive belief about the benefits of the protocol, belief in the legitimacy of using the protocol and trust within the clinical team. Two inhibiting mechanisms included pessimism about the protocol being beneficial and pessimism about the team. Successful implementation was defined as achieving fidelity and sustained use of the intervention. Two intermediate outcomes, acceptability and feasibility of the intervention, and adoption, were necessary to achieve before successful implementation.

Conclusion: This rapid realist review synthesised key information from the literature and clinician feedback to develop a theory-based approach to clinical implementation of sepsis screening. The programme theory presents knowledge users with an outline of how and why clinical interventions lead to successful implementation and could be applied in other clinical areas to improve quality and safety.

Keywords: Healthcare quality improvement; Implementation science; Infection control.

Figure 1

Document search flow diagram for realist synthesis adapted from Wong, Greenhalgh, Westhorp et al.

Figure 2

Overview of the final program theory outcomes for the implementation of a sepsis screening protocol within which promoting and inhibiting mechanisms operate. Stop signs represent inhibitory outcomes. Caution signs represent where mechanisms diverge for the different actors at each stage of successful implementation.