Post written by Shunsuke Yamamoto, MD, PhD, Yasushi Sano, MD, PhD, Nima Mottacki, MD, and Helmut Neumann, MD, PhD, from the Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan, the Gastrointestinal Center, Sano Hospital, Kobe, Japan, the Department of Internal Medicine, Division of Gastroenterology, Sahlgrenska University Hospital, Goteborg, Sweden, and the Department of Medicine I, University Medical Center Mainz, Mainz, Germany.

Our video aims to show the colonic intubation method called axis-keeping shortening (AKS) technique. This is the first video article demonstrating the AKS technique. The method is recognized as a standard method in Japan and in Japanese ESD guidelines. To be proficient with this intubation method is strongly recommended before starting colonic ESD. We thought it would be great to share the method with Western endoscopists.

Colonic intubation should be less painful and less time-consuming, both for the safety of patients and to ensure an efficient examination. The AKS method can avoid unnecessary extension or the balloon-like filling of the bowel with air; as such, it is less likely to disturb further interventions such as EMR and ESD.

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