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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.
An 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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| AuraGain group | Experimental | An 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. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Neutral position | Other | The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed at this position |
|
| Measure | Description | Time Frame |
|---|---|---|
| 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 | 30 seconds after positioning of head and neck |
| Measure | Description | Time Frame |
|---|---|---|
| Peak inspiratory pressure | peak airway pressure | 30 seconds after positioning of head and neck |
| Tidal volume | Expiratory tidal volume |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jin-Tae Kim, PhD | Seoul National University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul National University Hospital | Seoul | 110-744 | South Korea |
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| ID | Term |
|---|---|
| D012399 | Rotation |
| ID | Term |
|---|---|
| D009038 | Motion |
| D055585 | Physical Phenomena |
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An 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.
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| Extension | Other | The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed at this position |
|
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| Flexion | Other | The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed at this position |
|
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| Rotation | Other | The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed at this position |
|
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| Ambu AuraGain TM | Device | Single Use Laryngeal Mask Sterile |
|
| 30 seconds after positioning of head and neck |
| Fiberopic bronchoscopic view | 1. No visible glottis 2. Visible glottis and anterior epiglottis 3. Visible glottis and posterior epiglottis 4. Only visible glottis | 30 seconds after positioning of head and neck |