Patients undergoing elective surgery
Conditions
Interventions
PCFV group:In pressure controlled ventilation (PCV) mode, face mask ventilation is accepted, and the inhalation pressure is set to 10cmH2O, 15 cmH2O, and 20cmH2O, with an inhaled oxygen concentration
HFNO group:Receive high flow humidified oxygen at a rate of 40L/min, 50L/min, and 60L/min through a nasal cannula, and inhale oxygen concentration of 100%
Naso group:Adjust oxygen flow rates of 6L/min, 9L/min, and 12L/min through the nasopharynx airway, and inhale oxygen concentration of 100%.
Sponsors
Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 75 Years
Inclusion criteria
Inclusion criteria: Choose to undergo tracheal intubation general anesthesia surgery, age = 18 years old, ASA grade I-III, BMI<32kg/m2, sign an informed consent form
Exclusion criteria
Exclusion criteria: Patient refusal, difficulty in mask ventilation, facial anatomical abnormalities, history of bleeding during nasopharyngeal surgery, difficulty in placement of nasopharyngeal airway
Design outcomes
Secondary
| Measure | Time frame |
|---|---|
| Reflux aspiration; | — |
Primary
| Measure | Time frame |
|---|---|
| CSA; | — |
Countries
China
Contacts
Public ContactGuoqiang Hu
Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University
Outcome results
None listed