General Anesthesia
Conditions
Brief summary
The purpose of this study is to investigate the changes of the oropharyngeal leak pressure of the air-Q self-pressurizing masked laryngeal airway in the different head and neck positions. Moreover, the adequacy of ventilation will be assessed in the different head and neck positions.
Interventions
PROCEDURENeutral head position
PROCEDUREFlexed head position
PROCEDUREExtended head position
PROCEDURERotated head position
DEVICEAir-Q SP Airway
Sponsors
Yonsei University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
DIAGNOSTIC
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* adult patients aged over 20 yrs who are scheduled for surgery under general anesthesia
Exclusion criteria
* anticipated difficult intubation * body mass index more than 30 km/m2 * history of gastroesophageal reflux disease * history of esophageal operation * cervical spine disease * mass in the oral cavity or neck
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Oropharyngeal leak pressure | Within 5 minutes after the insertion of the air-q self-pressurizing masked laryngeal airway | The oropharyngeal leak pressure was measured by closing the expiratory valve of the circle system at fixed O2 flow 3L/min and 40 cmH2O |
Secondary
| Measure | Time frame |
|---|---|
| Peak airway pressure | Within 5 minutes after the insertion of the air-q self-pressurizing masked laryngeal airway |
| Fiberoptic bronchoscope grade | Within 5 minutes after the insertion of the air-q self-pressurizing masked laryngeal airway |
Countries
South Korea
Outcome results
None listed