From the Intensive Care Unit (G.R.G., P.M.B., B.S.L.C.), South Brittany Hospital Group, Lorient; CHU Rennes (E.M.L.P.), Inserm, CIC 1414 (Centre d'Investigation Clinique de Rennes), Rennes; and Visceral Surgery Unit (D.J.G.), and Hematology Unit (J.D.N.), South Brittany Hospital Group, Lorient, France.
Simul Healthc. 2021 Oct 1;16(5):362-366. doi: 10.1097/SIH.0000000000000520.
Simulation training is an increasingly used method to train medical students in the use of ultrasound guidance for vascular access positioning. Although very efficient for basic training, commercial simulators for vascular access do not reproduce real-life conditions. We developed a biological training model, using porcine liver, and compared it with an existing commercial model.
Whole porcine livers were used by perfusing the portal vein system after inferior vena cava clamping. Thirty-three practitioners accustomed to ultrasound-guided procedure were enrolled to perform an ultrasound-guided vascular procedure on both biological and commercial models. Procedure duration was recorded and 10-point scales were used to compare the 2 models regarding image quality, procedure feeling, and similarity with the real-life procedure.
Participants reported a better image quality with the biological model (8.8 ± 1 vs. 7.7 ± 2, P = 0.007) as well as a significant difference in the procedure feeling (8.0 ± 1 vs. 6.9 ± 1.9, P = 0.002). Real-life likeness was significantly better for the biological model (8.4 ± 1.1 vs. 4.5 ± 6, P < 0.0001). Procedure duration was almost 3 times longer using the biological model than the commercial model (209.6 ± 189.0 vs. 59.8 ± 50.1, P < 0.0001).
This study validates our biological model of porcine's liver as an interesting training model, allowing closer real-life perception than its commercial counterpart. This model could complement and enhance simulation learning.
模拟训练是一种越来越多地用于培训医学生使用超声引导进行血管入路定位的方法。虽然对于基础培训非常有效，但用于血管入路的商业模拟器无法复制现实生活中的情况。我们开发了一种生物培训模型，使用猪的肝脏，并将其与现有的商业模型进行了比较。
使用猪的整个肝脏，在腔静脉夹闭后通过门静脉系统进行灌注。招募了 33 名习惯于超声引导程序的从业者，在生物和商业模型上进行超声引导血管程序。记录手术时间，并使用 10 分制量表比较两种模型的图像质量、手术感觉和与实际手术的相似性。
参与者报告说，生物模型的图像质量更好（8.8 ± 1 对 7.7 ± 2，P = 0.007），并且手术感觉有显著差异（8.0 ± 1 对 6.9 ± 1.9，P = 0.002）。生物模型的现实生活相似度明显更好（8.4 ± 1.1 对 4.5 ± 6，P < 0.0001）。与商业模型相比，生物模型的手术时间几乎长了 3 倍（209.6 ± 189.0 对 59.8 ± 50.1，P < 0.0001）。
本研究验证了我们的猪肝脏生物模型作为一种有趣的培训模型的有效性，它可以提供比商业模型更接近现实生活的感知。该模型可以补充和增强模拟学习。
