Study: NCT02644837

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Insertion of Ambu AuraGain laryngeal mask airway and Igel
Description: Insertion of Ambu AuraGain and iGel laryngeal mask airways in accordance with manufacturer instruction

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Insertion of Ambu AuraGain laryngeal mask airway and Igel
Description: Insertion of Ambu AuraGain and iGel laryngeal mask airways in accordance with manufacturer instruction

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Fibreoptic assessment with Ambu A-scope
Description: Passage of Ambu a-scope fibrescope down shaft of laryngeal mask airway and assessment of alignment with glottis in relation to amount of glottis that is easily visualised

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Fibreoptic assessment with Ambu A-scope
Description: Passage of Ambu a-scope fibrescope down shaft of laryngeal mask airway and assessment of alignment with glottis in relation to amount of glottis that is easily visualised

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Ability to insert nasogastric tube
Description: Passage of nasogastric tube down the gastric drainage channel of the device in accordance with manufacturer guidance

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Ability to insert nasogastric tube
Description: Passage of nasogastric tube down the gastric drainage channel of the device in accordance with manufacturer guidance

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Measurement of OLP
Description: Measurement of OLP by closing the adjustable pressure limiting valve against a constant fresh gas flow rate of 3 litres/minute

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Measurement of OLP
Description: Measurement of OLP by closing the adjustable pressure limiting valve against a constant fresh gas flow rate of 3 litres/minute

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Ability to perform positive pressure ventilation
Description: The ability to deliver 6 mls/kg volumes breaths by means of positive pressure ventilation will be assessed

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Ability to perform positive pressure ventilation
Description: The ability to deliver 6 mls/kg volumes breaths by means of positive pressure ventilation will be assessed

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Assessment of ease of insertion
Description: Ease of insertion will be subjectively assessed by operator in relation to presence and nature of resistance to insertion of the device

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Assessment of ease of insertion
Description: Ease of insertion will be subjectively assessed by operator in relation to presence and nature of resistance to insertion of the device

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Record number of manipulations
Description: The number of manipulations/adjustments will be recorded for the second device only for the remainder of the device use during surgery until the patient wakes.