构建负担得起,耐用,中等可靠性的弹道凝幻象,用于超声波引导的神经块训练
Brennan P Marsh-Armstrong1, John F Ryan1, David J Mariano1
1University of California, San Diego School of Medicine.
Journal of visualized experiments : JoVE
|February 26, 2024
概括
低成本的弹道凝超声波幽灵为练习区域麻醉神经块提供现实的解剖模型. 与商业选择相比,这些耐用,可重复使用的幻影显著降低了培训成本.
科学领域:
- 医学教育 医学教育
- 麻醉学 麻醉学
- 生物医学工程 生物医学工程
背景情况:
- 超声导向区域麻醉 (UGRA) 需要实践.
- 活组织实践带来风险和道德问题.
- 商业上可用的UGRA幽灵对许多机构来说都非常昂贵.
研究的目的:
- 开发一种方法来制造低成本,耐用和现实的基于凝的弹道超声波幽灵.
- 模拟特定的神经阻塞目标,包括中间,大腿,上带 iliaca 平面,和 serratus 前面平面.
- 为UGRA培训提供一个具有成本效益的替代方案.
主要方法:
- 利用计算机辅助设计 (CAD) 模拟中枢,股骨,腹膜,前平面神经块的解剖学.
- 3D打印的解剖模型用于制造弹道凝的模.
- 混合弹道凝与面粉和染料用于回声效应;模拟容器与负空间和神经与线;3D打印模拟骨头.
主要成果:
- 开发了一种生产耐用,低成本弹道凝超声波幻影的方法.
- 幻影准确地复制了UGRA的解剖学标志,组织平面和回声性.
- 模拟的神经,血管和骨表现出现实的超声波特征,包括骨的后部影像.
- 生产成本比商业替代品 (成本的4%) 低得多 (第一个200美元,后续60美元).
结论:
- 弹道凝是一种多功能介质,用于创建现实的和具有成本效益的超声波幻影.
- 这些幻影为超声波导向区域麻醉提供了安全有效的训练工具.
- 开发的方法允许创建各种UGRA程序的幻影,从而提高了培训的可访问性.
相关概念视频
Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
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Hebbian LTP
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The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
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