Sepsis-related myocardial injury is common in sepsis patients and has been repeatedly associated with poor patient outcomes. While experimental animal studies suggest that direct and indirect myocardial damage occurs via a wide range of inflammatory mediators, including bacterial toxins, the extent of bacterial-driven myocardial injury in human sepsis remains unclear. This scoping review aims to map existing evidence, identify knowledge gaps and guide future research priorities.

This scoping review will follow the Joanna Briggs Institute methodology for scoping reviews. The review is anticipated to start on 12 December 2024 and be completed by 31 October 2025. A comprehensive search will be conducted in MEDLINE (PubMed), Web of Science and EMBASE. Two independent reviewers will screen titles and abstracts, followed by a full-text review of potentially eligible studies. Studies focusing on the role of bacteria and/or their toxins in myocardial injury in adult patients with sepsis will be included. Data will be independently extracted using predefined forms, and findings will be reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analysis extension for Scoping Reviews guidelines.

Ethical approval is not required for this scoping review. On completion, findings will be submitted for publication in a peer-reviewed medical journal and presented at scientific conferences. The results will help identify and analyse knowledge gaps, providing valuable insights to inform future research in patients with sepsis.

Registered on Open Science Framework 3 March 2025.