一个新的呼吸模式模型和分析,以尽量减少患者在医疗呼吸机中的不适
M Deepa1, R Vidhyapriya2, A S Raagul3
1Department of Electronics and Communication Engineering, PSG Institute of Technology and Applied Research, Coimbatore, 641026, India. deepa@psgitech.ac.in.
Scientific reports
|January 15, 2025
概括
这项研究引入了医疗呼吸机的环状波形,与传统的步骤或坡道模式相比,为患者提供更顺的呼吸. 这种无冲动的模拟非常接近自然呼吸,改善了患者的舒适性和呼吸机设计.
科学领域:
- 生物医学工程 生物医学工程
- 机械工程 机械工程
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 目前的医疗呼吸器模拟主要使用步骤或坡道模式来控制压力和体积的通风.
- 这些常规波形可以引起患者的不适,因为的压力和流量变化.
- 顺的压力和流量变化对于尽量减少机械通风期间患者的不适至关重要.
研究的目的:
- 研究一种循环形波形模式,用于模拟医疗呼吸机中的压力和流量变化.
- 通过实现更顺的空气和氧气混合物输送来减少患者的不适.
- 为通风机设计人员提供循环形图案的数学模型.
主要方法:
- 在吸入和呼出阶段使用循环形图案模拟压力和流量变化.
- 暂时分析压力变化,以评估没有冲动的分娩.
- 为压力/体积控制通风中循环形图案模拟制订数学模型.
- 在压力控制通风中对循环形,步形和坡道形状进行比较分析.
- 使用CITRIX呼吸分析仪进行自然呼吸模式的实验测量,用于模型验证.
主要成果:
- 由于压力/流量曲线的有限导数,循环形图案导致空气和氧气混合物相对无冲动的输送.
- 与类似的通风器设置下的步骤/坡道配置相比,在循环形形状的配置文件中观察到潮体积的边际减少.
- 控制体积通风的数学模型根据统计参数密切描述了基于统计参数的自然呼吸模式.
结论:
- 建议的环状波形是医疗呼吸机的步骤和坡道配置文件的优越替代方案,提高了患者的舒适性.
- 环状状形状非常接近自然呼吸模式,经过实验研究验证.
- 开发的数学模型为寻求实施更顺的通风策略的通风器设计师提供了有价值的工具.
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