None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Age >=18 years. 2. BMI 28–35 kg/m². 3. ASA classification: Class I or II. 4. Scheduled to undergo gastrointestinal endoscopy under intravenous anesthesia. 5. Agrees to participate in this study and has signed the informed consent form.
Exclusion criteria
Exclusion criteria: 1. History of confirmed upper respiratory tract infection within the past two weeks 2. History of nasal septal deviation, nasal polyps, epistaxis, nasal mucosal injury, or nasal trauma 3. Confirmed pulmonary disease such as acute asthma exacerbation, chronic obstructive pulmonary disease, pulmonary bullae 4. Concurrent severe cardiac, pulmonary, hepatic, or renal system disorders 5. Severe gastroesophageal reflux disease, intestinal obstruction, or insufficient fasting period 6. History of anaesthetic drug allergy 7. Patient deemed unsuitable for study participation by the investigator
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Incidence of perioperative hypoxemia; | — |
Secondary
| Measure | Time frame |
|---|---|
| Perioperative minimum oxygen saturation index;Duration of hypoxia;Proportion requiring additional airway interventions (jaw thrust, mask ventilation =10 seconds, conversion to laryngeal mask or endotracheal intubation);Endoscopist satisfaction score;Modified Aldrete Score;Sore Throat Visual Analogue Scale (VAS) Score;Incidence of mucosal injury; | — |
Countries
China
Contacts
Shanghai General Hospital