Department of Anesthesia and Intensive Care Medicine, Medical University Innsbruck, Anichstraße 35, A-6020, Innsbruck, Austria.
Department of Medical Statistics, Informatics and Health Economics, Medical University of Innsbruck, Innsbruck, Austria.
Anaesthesist. 2021 Sep;70(9):761-767. doi: 10.1007/s00101-021-00914-x. Epub 2021 Feb 9.
Supraglottic airway devices perform more poorly and have lower oropharyngeal leak pressure in edentulous patients than in patients with teeth. The Ambu Aura Gain is a newer second generation supraglottic airway device.
This randomized clinical trial assessed the oropharyngeal leak pressure in edentulous patients using the Ambu Aura Gain with a gastric tube for insertion guidance and without insertion guidance.
Patients with ASA (American Society of Anesthesiology) physical status I-III were recruited. Primary outcome was oropharyngeal leak pressure after insertion. Secondary outcome parameters were oropharyngeal leak pressure 15 min and 30 min after insertion, insertion time, insertion attempts and glottis view through flexible fiberscope.
In this study 72 patients aged between 51 and 90 years (mean 73 years) were randomly allocated to the "with guidance" (n = 36) or the "without guidance" group (n = 36). Mean (SD) oropharyngeal leak pressure in "with guidance" and "without guidance" group was 24 cm HO and 24 cm HO (ns), respectively. A difference was found in mean insertion time with guidance versus without guidance group 52 s (45 s) vs. 26 s (15 s) (p < 0.001). No difference was found in any of the other secondary outcome parameters.
A guided insertion technique does not improve oropharyngeal leak pressure of the Ambu AuraGain™ in edentulous patients. As the only difference is an increase in insertion time this technique is of no benefit for this population.
相比有牙齿的患者，无牙患者使用声门上气道装置时效果更差，且其咽腔漏气压更低。安必成 AuraGain 是一种新型第二代声门上气道装置。
本随机临床试验评估了使用带有胃管用于引导插入的安必成 AuraGain 以及无引导插入时无牙患者的咽腔漏气压。
纳入 ASA （美国麻醉医师协会）身体状况 I-III 级的患者。主要结局为插入后咽腔漏气压。次要结局参数包括插入后 15 分钟和 30 分钟的咽腔漏气压、插入时间、插入尝试次数以及通过纤维喉镜观察声门。
本研究共纳入 72 名年龄在 51 岁至 90 岁之间（平均 73 岁）的患者，随机分为“有引导”（n=36）或“无引导”组（n=36）。“有引导”和“无引导”组的平均（SD）咽腔漏气压分别为 24cmH2O 和 24cmH2O（无统计学差异）。有引导组与无引导组的平均插入时间分别为 52s（45s）和 26s（15s）（p<0.001），存在显著差异。其他次要结局参数无显著差异。
引导插入技术不能提高无牙患者安必成 AuraGain™的咽腔漏气压。由于唯一的区别是插入时间的增加，因此该技术对该人群没有益处。
