patients need general anesthesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Aged 18 to 75 years; 2. Patients undergoing elective surgery who intend to require endotracheal intubation .
Exclusion criteria
Exclusion criteria: 1. Patients with predictable difficult airway; 2. BMI greater than 28; 3. Patients with facial scar, whiskers, facial trauma, gastric tube implantation, etc., which are considered to directly affect the effect of mask ventilation.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| antral cross-sectional area (CSA);Carbon dioxide concentration at end of breath;oxygen saturation; | — |
Secondary
| Measure | Time frame |
|---|---|
| effective vital volume; | — |
Countries
china
Contacts
Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China