气管导管套囊压力与注气量的关系：羊离体气管研究
The Relationship between Cuff Pressure and Air Injection Volume of Endotracheal Tube: A Study with Sheep Trachea Ex Vivo.
作者信息
Wang Ruixue, Qin Xinlei, Zhou Wenyi, Zhao Yujia, Yin Jiangwen, Cao Zhenggang, Zhai Jingwen, Wang Sheng
机构信息
Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China.
Department of Anesthesiology, Bingtuandiyishi Hospital of Xinjiang Uygur Autonomous Region, Aksu 843000, China.
出版信息
Appl Bionics Biomech. 2022 Jun 29;2022:1748233. doi: 10.1155/2022/1748233. eCollection 2022.
BACKGROUND
Endotracheal intubation is a widely used treatment. Excessive pressure of the endotracheal tube cuff leads to a series of complications. Here, we used tracheae of sheep to analyze the relationship between the air injection volume and endotracheal tube cuff pressure so as to guide the doctors and nurses in controlling the pressure of the endotracheal tube cuff during clinical work and minimise the risk of complications.
MATERIALS AND METHODS
Forty sheep tracheae were utilised and were divided into five groups according to their diameters. Different sizes of endotracheal tubes were inserted into each trachea, and the cuff pressure with the increase of air injection volume was recorded. The formulas that reflect the relationship between air injection volume and cuff pressure were obtained. Then, sheep tracheae were randomly selected; different types of tubes were inserted, and the stipulated volume of air was injected. The actual pressure was measured and compared with the pressure predicted from the formulas. Statistical analysis was conducted to verify whether the formulas obtained from the first part of the experiment were in accordance with the expert evaluation table, which consists of opinions of several experts.
RESULTS
After obtaining 15 formulas, we collected the differences between the theoretical cuff pressure and the actual cuff pressure that satisfied the expert evaluation. Relying on the formulas, the medical turntable was obtained, which is a tool that consists of two round cards with data on them. The top card has a notch. The two cards are stacked together, and as the top card rotates, the data on the bottom card can be easily seen in a one-to-one relationship.
CONCLUSION
The formulas are capable of showing the relationship between the cuff air injection volume and pressure of endotracheal tube cuff. The medical turntable can estimate the air injection volume to ensure that the pressure stays in an acceptable range.
背景
气管插管是一种广泛应用的治疗方法。气管导管套囊压力过高会导致一系列并发症。在此，我们利用羊的气管分析注气量与气管导管套囊压力之间的关系，以指导医护人员在临床工作中控制气管导管套囊压力，将并发症风险降至最低。
材料与方法
使用40个羊气管，根据其直径分为五组。将不同尺寸的气管导管插入每个气管，记录随着注气量增加时的套囊压力。获得反映注气量与套囊压力关系的公式。然后随机选择羊气管；插入不同类型的导管，并注入规定体积的空气。测量实际压力并与根据公式预测的压力进行比较。进行统计分析以验证从实验第一部分获得的公式是否符合由几位专家意见组成的专家评估表。
结果
获得15个公式后，我们收集了满足专家评估的理论套囊压力与实际套囊压力之间的差异。依靠这些公式，获得了医用转盘，这是一种由两张带有数据的圆形卡片组成的工具。上面的卡片有一个缺口。两张卡片叠放在一起，当上面的卡片旋转时，可以很容易地以一一对应的关系看到下面卡片上的数据。
结论
这些公式能够显示套囊注气量与气管导管套囊压力之间的关系。医用转盘可以估计注气量，以确保压力保持在可接受范围内。
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