The Influence of Head and Neck Position on the Oropharyngeal Leak Pressure Using Air-Q SP Airway

Not Applicable

Completed

• Conditions: General Anesthesia
• Interventions: Procedure: Flexed head position; Procedure: Extended head position; Procedure: Rotated head position; Procedure: Neutral head position; Device: Air-Q SP Airway

• Registration Number: NCT02402387
• Lead Sponsor: Yonsei University

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.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2015-03-24
• Study First Submitted QC: 2015-03-27
• Study First Posted: 2015-03-30
• Study Start: 2015-05-12
• Primary Completion: 2015-08-27
• Study Completion: 2015-08-27
• Status Verified: 2017-01
• Last Update Submitted: 2017-01-23
• Last Update Posted: 2017-01-25

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 51

Inclusion Criteria

• adult patients aged over 20 yrs who are scheduled for surgery under general anesthesia

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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

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Flexed	Flexed head position	The patient's head will be flexed.
Flexed	Air-Q SP Airway	The patient's head will be flexed.
Extended	Extended head position	The patient's head will be extended.
Extended	Air-Q SP Airway	The patient's head will be extended.
Rotated	Rotated head position	The patient's head will be rotated.
Rotated	Air-Q SP Airway	The patient's head will be rotated.
Neutral	Air-Q SP Airway	The patient's head will be in neutral position.
Neutral	Neutral head position	The patient's head will be in neutral position.

Primary Outcome Measures

Name	Time	Method
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 Outcome Measures

Name	Time	Method
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

Trial Locations

Locations (1)

Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine; 🇰🇷 Seoul, Korea, Republic of