Construction and Effectiveness Evaluation of Painless Digestive Endoscopy Mode Led by Anesthesia Nurses Under the Guidance of Anesthesiologists

Inclusion Criteria: * Age ≥ 16 years old, * no oral intake before surgery: liquid for 2 hours, solid for 6 hours. Exclusion Criteria: * American Society of Anesthesiology (ASA) classification greater than III, * sleep apnea, * allergies to soybeans, eggs, or peanuts, * pregnancy, * previous anesthesia related complications,, * potential difficult ventilation, * acute gastrointestinal bleeding, * sub intestinal obstruction, * severe chronic obstructive pulmonary disease (COPD)