閉鎖式吸引カテーテルによる垂れ込み現象の解明と理解

抄録

The objective of this study is to elucidate the issue of dropping during the flushing of closed catheters and to improve awareness of dropping prevention. Simulating a subject equipped with a ventilator, a comparative study on the causes of dropping during flushing was conducted using three different closed catheters widely used in the medical field. The results indicated significant differences in adult catheters based on ventilation volume and mode, with some cases showing significant differences according to PEEP (positive end-expiratory pressure) and angle. Additionally, pediatric and adult + pediatric catheters exhibited significant differences in dropping based on ventilation volume and type, revealing structural issues with the catheters. Specifically, it was suggested that flow from the ventilator directly affects the catheter tip and that saline buildup in the anti-drop valve can cause dropping. Furthermore, dropping issues were observed depending on the technique of the individual performing the suction. Based on the novel insights gained from this study, there is consideration to form a research team for the development of an improved device in the future.