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

Yonsei University

Status: Completed

Conditions: General Anesthesia

Treatments: Procedure: Neutral head position; Procedure: Rotated head position; Device: Air-Q SP Airway; Procedure: Extended head position; Procedure: Flexed head position

Study type: Interventional

Funder types: Other

Identifiers

NCT02402387

4-2015-0050

Details and patient eligibility

About

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.

Enrollment: 51 patients

Sex: All

Ages: 20+ years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Diagnostic

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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51 participants in 4 patient groups

Neutral

Active Comparator group

Description:

The patient's head will be in neutral position.

Treatment:

Procedure: Neutral head position

Device: Air-Q SP Airway

Flexed

Experimental group

Description:

The patient's head will be flexed.

Treatment:

Procedure: Flexed head position

Device: Air-Q SP Airway

Extended

Experimental group

Description:

The patient's head will be extended.

Treatment:

Procedure: Extended head position

Device: Air-Q SP Airway

Rotated

Experimental group

Description:

The patient's head will be rotated.

Treatment:

Procedure: Rotated head position

Device: Air-Q SP Airway