3.1. Patients
inadequate bowel preparation
From April 18, 2020, to June 28, 2020, a total of 60 patients were eligible for the study following the screening of inclusion and exclusion criteria. Of these, 3 patients were exited due to inadequate bowel preparation, and 57 patients were randomized (26 in the control group and 31 in the trial group). During the trial, 2 patients were found to have unsuccessful cecal retroflexion and were exited from the group. Finally, 55 patients completed the trial and were included in the study (26 in the control group and 29 in the trial group) (Fig. Technical roadmap of the patients.