日本人に適した新しい声門上器具の臨床的有用性の評価

点击翻译按钮获取中文摘要

Background. Supraglottic airways (SGAs) are acknowledged as being reliable. However, several complications related to SGAs are still an issue. The aim of the current study was to compare the force exerted by the i-gel airway on a three-dimensional printed airway model with that exerted by a 3D printed modified SGA.Methods. After a preliminary experiment in Thiel embalmed cadavers, we created a 3D printed modified SGA (mSGA) and five 3D printed airway models based on computed tomography (CT) data from five female patients. We compared the force exerted by the i-gel and mSGA on the larynx in the 3D printed airway models. In addition, tidal volumes with insertion of the airway devices into the 3D printed airway model and administration of different levels of pressure controlled ventilation were compared.Results. The data below indicates median [min-max] for the i-gel and mSGA, respectively. The forces exerted by the cuff parts were as follows: ventral: 20.8 N [13.8-27.0] and 9.4 N [6.5-20.0], proximal: 1.3 N [0-5.0] and 2.0 N [0-5.0], and dorsal parts: 12.0 N [5.6-22.0] and 8.0 N [2.0-9.0], respectively. Hence, the force exerted by the ventral and dorsal parts of the mSGA cuff was significantly lower. We also found significantly higher tidal volumes with the mSGA under PCV of 10, 15, and 20 cmH2O.Conclusion. Our study indicated that the thinner and narrower mSGA cuff compared with the i-gel reduced the force exerted on a 3D printed airway model, and might lead to reduction of SGA-related complications without impairing ventilation.