Find in Library

<i>Background:</i> The aim of this study was to evaluate the effect of a newly designed foam cushion on the air leakage and pressure when applied to the face. <i>Methods:</i> A teaching manikin connected to a bilevel positive airway pressure ventilator attached to four different brands of oronasal masks (Amara, Mirage, Forma, and Wizard) was used. The foam cushions of 5-mm and 10-mm-thickness were attached to the masks, and each mask was tested without a cushion. Six pressure sensors were placed on the manikin’s face, and data were recorded. Inspiratory volume and air leak flow from the ventilator were observed. <i>Results:</i> Air leakage was influenced by both the mask brand and the presence of a cushion. The presence of a cushion did not affect the Wizard mask in terms of leakage (<i>p</i> = 0.317) or inspiratory volume (<i>p</i> = 0.726). The Wizard and Amara masks generated the lowest contact pressure on the frontal forehead (<i>p</i> < 0.001) compared to the other five points. <i>Conclusions:</i> Utilisation of a cushion reduces air leakage and maintains greater inspiratory volume regardless of its thickness. The contact pressure varies depending on the brand of the mask, which would require a difference in the thickness of the cushion for pressure reduction.