Effect and safety evaluation of Anrikefon combined with propofol in painless gastrointestinal endoscopy

INTERVENTION: Group H:In group H, 1ug/kg of Enrique was slowly injected 15min before anesthesia induction for 2min.;Group P:Group P was given 0.1ml/kg saline 15min before anesthesia induction, and the injection time was 2min.; CONDITION: Painless gastrointestinal endoscopy anesthesia PRIMARY OUTCOME: Total induced dose of propofol, frequency and dosage of propofol supplementation, and total dosage of propofol;;Abdominal distension and abdominal pain score 15min after waking up.;incidence of hypoxemia (spo 2 < 90%); SECONDARY OUTCOME: Induction time; Awakening time; Out‐of‐room time;Body movement and coughing during operation;The incidence of subclinical respiratory depression (SpO 2 < 95%);Injection pain, bradycardia and hypotension;;postoperative nausea and vomiting, postoperative headache and dizziness.; INCLUSION CRITERIA: Patients who underwent painless gastrointestinal endoscopy in our hospital, ASAI‐II grade, aged 18‐74 years, BMI 18‐28 kg/m^2.