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

Seoul National University

Status: Completed

Conditions: General Anesthesia

Treatments: Procedure: Extension; Procedure: Right rotation; Procedure: Flexion

Study type: Interventional

Funder types: Other

Identifiers

NCT03147469

H-1704-068-844

Details and patient eligibility

About

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.

Enrollment: 40 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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40 participants in 4 patient groups

Neutral

No Intervention group

Description:

After insertion of Ambu AuraGain™, the variables will be assessed at each positions including neutral, flexion, extension, right rotation under random order.

Flexion

Experimental group

Description:

After positioning the subjects' neck to flexion, the variables will be assessed.

Treatment:

Procedure: Flexion

Extension

Experimental group

Description:

After positioning the subjects' neck to extension, the variables will be assessed.

Treatment:

Procedure: Extension

Right rotation

Experimental group

Description:

After positioning the subjects' head to right rotation, the variables will be assessed.

Treatment:

Procedure: Right rotation