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Anastomotic leakage (AL) after colorectal surgery is associated with significant morbidity and mortality. Poor perfusion of bowel anastomosis is a significant contributing factor. ICG is a dye administered during laparoscopic surgery to assess bowel perfusion by fluorescent imaging – the aim of this study was to determine whether its use in our centre during elective laparoscopic colorectal cancer resections led to improved patient outcomes. Method Single-centre comparative study of all patients who underwent elective colorectal laparoscopic resections for cancer January 2019- January 2021. Primary outcome investigated was AL. Secondary outcomes: in-patient length of stay, clinical suspicion of AL and post-operative ileus. Cohorts compared with χ2 test. Results 25 patients had resections with ICG, 60 without. None in ICG group, and three in non-ICG group (5%) had AL; p-value 0.29. The ICG group were less likely to have CT for suspected anastomotic leak 12% vs 23.3%, p-value 0.29; and, post-operative ileus 5.3% vs 19.6%, p-value 0.09. Statistically significant reduction in mean inpatient length of stay when ICG used (4.0 days, 95% CI 3.3-4.7) compared to when not used (6.7 days, 95% CI 5.0-8.3). Conclusion Only a small number of previous studies have compared AL rates with and without ICG, finding that its use leads to a significant reduction in AL. While sample size small, our findings supports this. Using ICG also led to a significant reduction in inpatient length of stay. ICG fluorescence angiography is now established as our normal practice for all colorectal resections as a safe, innovative, simple technology.

EP.TU.826Using Indocyanine Green (ICG) during laparoscopic bowel resections for elective cancer patients reduces anastomotic leaks and length of stay