高频振荡式风扇的比较
Kaoru Okazaki1, Jumpei Kuroda2
1Drs Okazaki and Kuroda are affiliated with the Department of Neonatology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan. kaoru_okazaki@tmhp.jp.
Respiratory care
|October 31, 2023
概括
高频振荡式通风机 (HFOV) 的性能因类型和设置而异. 临床医生必须仔细选择HFOV设置,考虑特定的设备和内管大小,以获得最佳的患者通风.
科学领域:
- 生物医学工程 生物医学工程
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 高频振荡式通风机 (HFOV) 的性能变化受到波形生成和电路特征的影响.
- 与其他车型相比,对活塞型HFOV的性能了解较少.
- 这项研究评估了四种不同的HFOV模型:Humming X,Vue (活塞),VN500 (隔膜) 和SLE5000 (反向喷气).
研究的目的:
- 为了在不同的HFOV模型中比较实现目标高频潮体积所需的振幅.
- 为了确定HFOV设置与实际传递的振幅和平均气道压力之间的关系.
- 分析符合性,频率和内管 (ETT) 直径对HFOV性能的相互作用.
主要方法:
- 采用了具有不同符合性 (0.5-1.0毫升/厘米H2O),频率 (12-15赫兹) 和ETT内部直径 (2.0-3.5毫米) 的试验肺.
- 评估目标高频潮量从0.5到3.0毫升.
- 对每个HFOV模型的输送潮体积和振幅从通风机到Y片和气泡压力进行了测量.
主要成果:
- 声X和Vue需要比SLE5000更高的振幅来达到目标的潮体积;VN500有局限性.
- 潮体积和压力在声X和Vue的Y部分下降,但在SLE5000上增加.
- VN500在15 Hz时显示出显著的潮体积下降;在所有模型中,振幅下降,VN500的Y片暂时增加.
结论:
- 实际输送的气膜体积和潮体积因HFOV模型和ETT内部直径而异,尽管通风机设置相同.
- 临床医生必须根据特定的呼吸机模型和患者因素 (如ETT大小) 个性化HFOV设置.
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