Lin Hui-Ling, Lee Yu-Chi, Wang Ssu-Hui, Chiang Li-Ying, Liu Jui-Fang
Department of Respiratory Therapy, Chang Gung University, Taoyuan 33301, Taiwan.
Department of Respiratory Therapy, Chiayi Chang Gung Memorial Hospital, Chiayi 61363, Taiwan.
Healthcare (Basel). 2020 Dec 1;8(4):523. doi: 10.3390/healthcare8040523.
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. 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. 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 ( = 0.317) or inspiratory volume ( = 0.726). The Wizard and Amara masks generated the lowest contact pressure on the frontal forehead ( < 0.001) compared to the other five points. 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.
本研究的目的是评估一种新设计的泡沫垫应用于面部时对漏气和压力的影响。使用了一个与双水平气道正压通气机相连的教学人体模型，该通气机连接了四种不同品牌的口鼻面罩（阿玛拉、幻影、福马和巫师）。将厚度为5毫米和10毫米的泡沫垫附着在面罩上，并对每个面罩在不使用垫子的情况下进行测试。在人体模型的面部放置了六个压力传感器，并记录数据。观察了来自通气机的吸气量和漏气流量。漏气受到面罩品牌和垫子存在的影响。就漏气（P = 0.317）或吸气量（P = 0.726）而言，垫子的存在对面罩“巫师”没有影响。与其他五个点相比，“巫师”和“阿玛拉”面罩在前额产生的接触压力最低（P < 0.001）。无论垫子厚度如何，使用垫子都能减少漏气并保持更大的吸气量。接触压力因面罩品牌而异，这可能需要不同厚度的垫子来降低压力。
