Technical skills and training of upper gastrointestinal endoscopy for new beginners

Figure 1 Examinee. A, B: Example of left lateral decubitus position. To avoid an increased intra-abdominal pressure while lying in a left lateral decubitus position, it is recommended to bend the legs; C: Example of supine position; D, E: The examinee is undergoing an upper gastrointestinal endoscopy while lying in a supine posture due to hemiplegia and tracheotomy (arrow mark).