Study of the adjustment of the Ambu laryngeal mask under magnetic resonance imaging

Abstract

The Ambu AuraOnce can be regarded as a safe product for airway maintenance in pediatric patients. No relationship was found between radiological measurements and sealing pressures.

Ambu AuraOnce versus i-gel laryngeal mask airway in infants and children undergoing surgical procedures

“…This finding contrasts that of Monclus et al17 who found no statistical difference between SGAD sizes. A significantly higher OPLP was noted in groups 2 and 3 between the 2 SGADs in favor of the i-gel.…”

Performance of the Pediatric-sized i-gel Compared with the Ambu AuraOnce Laryngeal Mask in Anesthetized and Ventilated Children

“…Regardless of inclusion of the data of infants weighing less than 10 kg, the subgroup analysis showed a statistically significant difference in the Ambu airway seal pressure: the smaller the child, the lower was airway seal pressure. This is in contrast to the findings of Monclus et al, 11 who found no statistical difference between the sizes. For the i-gel, more minor interventions and longer insertion times were necessary in the small sizes, which might indicate differences in mask performance according to children's age and weight.…”

“…Previously published studies have demonstrated the easy insertion and placement of the Ambu and attributed this characteristic to the shape of the device, with its 90-degree tube angle, which seems to fit laryngeal anatomy very well. 11,14,24 Comparing the angle of both devices used in our study, the Ambu indeed shows a more pronounced airway angle ( fig. 2), which might fit anatomically better into the hypopharynx and onto the laryngeal inlet.…”

“…10 The cuff and tube form a single item with a 90-degree tube angle. 11 It is a disposable device as well, but unlike the i-gel, it does not feature a gastric channel. Its clinical use is well established in adults and children, and several studies have shown the device's safety and effectiveness and patients' tolerance to it.…”

“…Its clinical use is well established in adults and children, and several studies have shown the device's safety and effectiveness and patients' tolerance to it. [11][12][13][14][15][16] The aim of this prospective, randomized, controlled trial was to compare clinical performance of the newly developed pediatric i-gel and the well-established Ambu AuraOnce in children. Our null hypothesis was that the difference in leak pressure between the two devices is less than 10% of the device leak pressures.…”