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低音神经刺激对上呼吸道结构和功能的影响使用移动墙计算流体动力学模拟:试点研究

Qiwei Xiao^1,2, Daniel Ignatiuk¹, Chamindu Gunatilaka^1,2

¹Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.

Journal of sleep research

|March 18, 2025

概括

催眠神经刺激 (HGNS) 在阻塞性睡眠呼吸暂停 (OSA) 中改善上呼吸道功能. 这项研究使用4DCT和CFD来量化气道变化,揭示了HGNS的横截面积增加和阻力降低.

科学领域:

呼吸系统医学呼吸系统医学
生物医学工程生物医学工程
睡眠科学睡眠科学

背景情况:

阻塞性睡眠呼吸暂停 (OSA) 影响着数百万人,低分泌神经刺激 (HGNS) 为CPAP提供了替代方案.
HGNS的治疗效果各不相同,这些差异的根本原因尚未完全理解.
在HGNS期间量化上呼吸道结构和功能变化对于理解治疗变异性至关重要.

研究的目的:

提出和验证一种使用4DCT和CFD来量化HGNS期间上呼吸道变化的新型非侵入性方法.
评估HGNS对气道横截面积 (CSA),神经肌肉工作和气道阻力的影响.
探索潜在的生物标志物来预测OSA患者的HGNS反应.

主要方法:

三名患有OSA的男性受试者在N2睡眠期间接受了4DCT扫描,有或没有HGNS,以及EEG和气流监测.
使用4DCT衍生的解剖学和运动数据,加上空气流量测量,进行了计算流体动力学 (CFD) 模拟.
进行了气道CSA,神经肌肉工作 (肌肉努力和压力) 和气道阻力量的量化.

主要成果:

HGNS显著增加了高达300%的气道CSA和高达490%的神经肌肉工作,主要是在口腔大喉.
在所有受试者中,每分钟的通风增加了 (15%-36%),呼吸道阻力大大降低了 (73%-97%).
观察到的鼻和鼻下垂体的变化在个体受试者之间有所不同.

结论:

开发的4DCT和CFD方法有效量化了高温气道诱导的上呼吸道结构和功能变化.
这些定量参数可以阐明HGNS治疗对OSA的反应的变化.
未来的应用包括预测非响应者,识别不良响应的原因,以及优化HGNS设备定位.

关键词:

在 CFD 交易中,我们可以看到 CFD.这就是为什么CTCTCTCTCT 在HGNS中,HGNS是指HGNS.激励激励激励激励

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