Objective: We developed and validated a realistic simulation model for ultrasound-guided central venous catheter insertion in children that is easy to build and inexpensive and can automatically reproduce arterial and venous blood flow. Methods: The simulation model was constructed with a chicken breast, two DWP-385 water pumps, two types of tubes and a controller. An elastic rubber tourniquet and a silicone tube were connected to each water pump, which generated different continuous flows mimicking those of the pediatric internal carotid artery and internal jugular vein, respectively. Both tubes were inserted into a piece of chicken breast and connected to the controller. Then, we provided a simulation program of ultrasound-guided central venous catheter insertion using our novel model to resident emergency medicine physicians. We also collected data on their knowledge and confidence levels regarding the procedure before and after the simulation via questionnaires utilizing a 5-point Likert scale. Results: The flow patterns of the artery and vein were well demonstrated with our model. A total of 11 resident physicians were enrolled. The knowledge and confidence regarding the discrimination of arteries and veins were significantly improved after training with our simulation model (p-value < 0.01). The subjective similarity and usefulness of our model also scored high on the questionnaire (median: 4; interquartile range in both categories: 4–5). Conclusion: Our novel simulation model is useful and realistic for ultrasound-guided central venous catheter insertion training. Clinical impact: This controlled motor system can be applied to many simulation models of artery and vein circulation.

中文翻译：

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实现超声引导儿童中心静脉导管插入动静脉血流的新型仿真模型


目的：我们开发并验证了一种用于超声引导儿童中心静脉导管插入的真实模拟模型，该模型易于构建且价格低廉，并且可以自动再现动脉和静脉血流。方法：用鸡胸肉、两个DWP-385水泵、两种类型的管子和一个控制器构建仿真模型。每个水泵连接有弹性橡胶止血带和硅胶管，分别产生不同的连续流量，模拟儿科颈内动脉和颈内静脉的流量。两个管子都插入一块鸡胸肉并连接到控制器。然后，我们使用我们的新模型向住院急诊医师提供了超声引导中心静脉导管插入的模拟程序。我们还通过使用 5 点李克特量表的问卷调查，收集了他们对模拟前后程序的知识和信心水平的数据。结果：我们的模型很好地展示了动脉和静脉的流动模式。共有11名住院医师入组。使用我们的模拟模型进行训练后，有关动脉和静脉辨别的知识和信心显着提高（p 值 < 0.01）。我们模型的主观相似性和实用性在问卷中也得分很高（中位数：4；两个类别的四分位数范围：4-5）。结论：我们的新型模拟模型对于超声引导的中心静脉导管插入训练是有用且现实的。临床影响：这种受控运动系统可应用于许多动脉和静脉循环的模拟模型。