Difficult Mask Ventilation
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Elective surgery under general anesthesia; 2. Edentulous adult patients; 3. ASA I-III; 4. BMI<25kg/m2; 5. Mallampati I-II.
Exclusion criteria
Exclusion criteria: 1. There are other causes of difficult mask ventilation; 2. Severe cardiopulmonary disease, inadequate oxygen storage; 3. There are contraindications to the use of nasopharyngeal airway.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Actual tidal volume of supraglottic ventilation within 1min after induction of general anesthesia; | — |
Secondary
| Measure | Time frame |
|---|---|
| Success rate of ventilation 3min after induction of anesthesia;Adverse events; | — |
Countries
China
Contacts
The First Affiliated Hospital of Zhengzhou University