The Influence of Head and Neck Position on Performance of Ambu AuraGain™

Seoul National University Hospital40 enrolled

Overview

The influence of different head and neck positions on the effectiveness of ventilation with the Ambu AuraGain airway remains unevaluated. This study aimed to evaluate the influence of different head and neck positions on ventilation with the AuraGain airway. AuraGain will be placed in all patients, and mechanical ventilation will be performed using a volume-controlled mode with a tidal volume of 10 ml/kg. The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed first for the neutral head position and then for the extended, flexed, and rotated head positions in a random order. Fiberoptic bronchoscopic view will be also assessed for each head and neck positions.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

OTHER

Masking

SINGLE

Enrollment

Conditions

General Anesthesia

Interventions

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Adults who were to undergo elective surgery under general anaesthesia using supraglottic airway device Exclusion Criteria: * Patients who had risk factor for difficult intubation * BMI \> 30kg/m2 * Emergency operation without NPO * History of cervical spine surgery or disease * History of esophageal operation or gastroesophageal reflux disease

Outcomes

Primary Outcomes

Oropharyngeal leak pressure

The airway pressure at which a leak sound is detected around the patient's mouth and at which the airway pressure has reached equilibrium, when the pressure-limiting valve of the anesthesia breathing system is closed and the fresh gas flow rate was fixed at 3 L/min.