Background: Fluorescence angiography with indocyanine green (ICG-FA) is frequently used in colorectal surgery to assess the blood perfusion in the region of an anastomosis. Previous studies with ICG-FA in both open and laparoscopic surgery could show a low rate of anastomotic leakage, e.g. the PILLAR II study with a leakage rate of 1.4%. This article presents own results, the current status of ICG-FA and the fields of application.
Objective: The aim of the study was to analyze whether the results obtained so far with ICG-FA are sufficient to recommend an extended use of this relatively new method in colorectal surgery.
Material And Methods: From July 2009 to June 2019 a total of 378 colorectal resections (280 colon resections and 98 rectal resections) with intraoperative examination of the anastomosis using ICG-FA were performed. In 13 patients (3.4%) there was reduced intraoperative perfusion, which led to a change in the operative procedure (resection of the anastomosis and new anastomosis, colostomy).
Results: The total anastomotic leakage rate was 3.7% with 8 leaks in the colon (2.9%) and 6 in the rectum (6.1%). Without the intraoperative change in 13 patients the rate of leakages could have increased to 7.1% (27/378). The use of ICG-FA in the group of patients studied potentially led to a reduction of the leakage rate by 48%. Current publications show similar results with a potential decrease in the rate of anastomotic leaks in colorectal surgery.
Conclusion: The results show a very low rate of anastomotic leakage when using ICG-FA. These results are promising in colorectal surgery but controlled randomized studies are lacking and should be carried out before final recommendations can be given.
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