Abstract:Objective To study the effect of inserting to rectum with standard colonoscope on the esophageal intubation ability of novices at gastroscopy.Methods 8 novices without endoscopic experience were randomized to two groups. The group A received training with the upper GI endoscopy module of GI-BRONCH Mentor, and the group B received training of rectal insertion plus the upper GI endoscopy module. Esophageal intubation test was conducted immediately after the training of both groups. The completion rates of esophageal intubation and the rates of each step were compared.Results The failure rate of group B is lower than that of group A (group B 17.50% vs group A 36.25%, P < 0.05). The independent completion rate of group B is higher (group B 63.75% vs group A 38.75%, P < 0.05). Group B is superior than group A in terms of advancing the distal tip to the left esophageal entrance (group B 97.47% vs group A 89.19%, P < 0.05).Conclusion Rectal insertion improves the skills needed for esophageal intubation of novices and make up for the defect of poor authenticity of the oral cavity part and pharynx part of VR endoscope simulators. It is a recommended training method.