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Mechanical Ventilation Boot Camp Curriculum
Published on: March 12, 2018
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应对COVID-19大流行时的紧急机械呼吸器的性能:一项相互比较的研究
概括
像Masi这样的紧急机械呼吸器与Neyün,Spiro Wave和FIUNA原型相比进行了评估. 性能因呼吸机类型和试验肺配置而有显著差异,影响了临床使用.
科学领域:
- 生物医学工程 生物医学工程
- 关键护理医学 关键护理医学
- 机械通风机械通风机械通风
背景情况:
- 紧急机械呼吸机在COVID-19大流行期间至关重要,以管理重症监护病房的高患者需求.
- 在秘鲁开发的Masi呼吸器在全国15多家医院部署.
- 在标准化条件下对这些紧急通风器进行比较的性能数据对于临床决策至关重要.
研究的目的:
- 为了比较Masi紧急机械呼吸器与其他流行时代呼吸器 (Neyün,Spiro Wave,FIUNA原型) 的性能.
- 为了评估通风器在传递设定参数 (潮体积,呼吸速率,PEEP) 的准确性,在不同的模拟肺部条件下.
- 根据定量性能指标,确定紧急通风机的最佳操作条件.
主要方法:
- 使用了三种测试肺部配置 (C1,C2,C3),具有不同的抗性和合规性.
- 风扇在体积控制模式下运行,设置了以下参数:潮体积 (400毫升),呼吸速率 (12bpm) 和正极呼气压 (PEEP) (8cmH2O).
- 采用双向差异分析来评估呼吸机类型和试验肺配置对交付参数的影响.
主要成果:
- 据MASI证明,潮体积的传递在目标的-20%至+8%之间,PEEP在+5%至+20%之间.
- 尼云表现出更广泛的变化,潮输送量从-50%到+35%不等,PEEP从-11%到+15%.
- 统计分析显示了参数传递的显著差异,受呼吸器类型和试验肺配置 (p<0.05) 的影响.
结论:
- 应急机械呼吸器的性能准确性取决于具体的设备和模拟的呼吸机制 (肺部顺应性和阻力) 而有很大差异.
- 测试肺部配置成为影响输送通风参数精度的关键因素.
- 了解这些性能差异对于选择最合适的紧急呼吸器和优化其在临床环境中的使用至关重要.
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