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

Yonsei University51 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

DIAGNOSTIC

Masking

SINGLE

Enrollment

Conditions

General Anesthesia

Interventions

Neutral head positionPROCEDURE

Flexed head positionPROCEDURE

Extended head positionPROCEDURE

Rotated head positionPROCEDURE

Eligibility

Sex: ALLMin age: 20 Years

Medical Language ↔ Plain English

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

Locations (1)

Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine

Seoul, Seoul, South Korea

Outcomes

Primary Outcomes

Oropharyngeal leak pressure

The oropharyngeal leak pressure was measured by closing the expiratory valve of the circle system at fixed O2 flow 3L/min and 40 cmH2O

Time frame: Within 5 minutes after the insertion of the air-q self-pressurizing masked laryngeal airway

Secondary Outcomes

Peak airway pressure

Time frame: Within 5 minutes after the insertion of the air-q self-pressurizing masked laryngeal airway

Fiberoptic bronchoscope grade

Time frame: Within 5 minutes after the insertion of the air-q self-pressurizing masked laryngeal airway

Data from ClinicalTrials.gov

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