WTP2.12 An Audit of anastomotic leak rate and mortality after abdominal surgery in a specialised Surgical Emergency Unit at John Radcliffe Hospital, Oxford

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Abstract Aims Expected anastomotic leak rates in the context of general surgery vary depending on type of anastomosis, but generally range from 0.5-18% [1]. This audit aimed to assess anastomotic leak rate after abdominal surgery from an entirely emergency population in a specialised Surgical Unit at John Radcliffe Hospital, Oxford. Methods Anastomotic leak rates were audited based on M&M data and patient records between 25/03/2024-02/01/2025. Data including patient demographics, type of join, length of stay, rate of leak/ return to theatre, and mortality were collected. The rate of stoma formation vs anastomosis was not assessed in this audit. Results Overall 78 cases (M=33, F=45) were analysed. Median age of patients was 67.5 years, mean ASA was 2. Leak and return to theatre rates were both determined to be 4% (n=3). Of the three recorded anastomotic leak cases, two were small bowel anastomoses, and one was ileocolic anastomosis. Mortality rate was 4% (n=3); one patient passed away due to other co-morbidities unrelated to the operation. Median length of stay was 10 days. Conclusions It is possible to have an acceptable rate of anastomotic leak in an emergency setting. To further this, it may be beneficial to audit the rates of stoma formation vs anastomosis in managing surgical emergency cases. References 1. Ellis, C.T. and J.A. Maykel, Defining Anastomotic Leak and the Clinical Relevance of Leaks. Clin Colon Rectal Surg, 2021. 34(6): p. 359-365.

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