Role of Indocyanine Green (ICG)-Enhanced Fluorescence in Primary and Revisional Bariatric Surgery: Narrative Overview of Selected Literature and Intraoperative Surgical Videos.

Laparoscopic sleeve gastrectomy is one of the most common bariatric surgical procedures. Despite being easier to perform than other bariatric procedures, it is not free of complications. Leaks are some of the most severe events, and are observed in around 0.5-6% of cases. Use of the near-infrared indocyanine green (ICG) perfusion test during sleeve gastrectomy seems to be promising. However, its application in sleeve gastrectomy is still in fieri. Similarly, ICG is not commonly used in Roux-en-Y gastric bypass. This report presents the main evidence from selected literature regarding the use of ICG during sleeve gastrectomy and Roux-en-Y gastric bypass, along with our remarks. It also provides intraoperative video clips and photographs showing the use of ICG in this surgical field.