一种测量潮体积的技术,在非侵入性呼吸辅助过程中,使用连续流量头盔CPAP进行测量
Andrea Coppadoro1, Giacomo Bellani2,3, Giuseppe Foti4,5
1Department of Anesthesia and Intensive care, San Gerardo Hospital, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.
Journal of clinical monitoring and computing
|June 17, 2023
概括
一种新方法准确地测量了对于呼吸衰竭患者的头盔CPAP治疗中的潮体积. 充足的空气流量至关重要;空气流量不足导致低估,需要进一步的体内验证.
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
- 关键护理医学 关键护理医学
背景情况:
- 随着COVID-19的流行,人们越来越多地使用头盔CPAP进行呼吸支.
- 头盔CPAP缺乏综合的潮体积监测,这对于患者管理至关重要.
- 精确的潮体积测量对于优化非侵入性通风至关重要.
研究的目的:
- 评估一项用于测量连续流量头盔CPAP时的潮体积的新技术.
- 在各种生理条件下评估该技术的准确性.
- 为了确定空气流和患者努力对测量准确性的影响.
主要方法:
- 使用了一种模拟自发呼吸患者在头盔上CPAP的长椅模型.
- 使用头盔的外流痕迹分析来测量潮体积.
- 头盔的流量变化 (60-90L/分钟),以匹配峰值吸入流量,其中一个子集测试了不足的流量.
主要成果:
- 这种新技术显示了潮体积测量的低偏差 (-3.2 ± 29.3 mL) 和相对误差 (-1 ± 4.4%) .
- 潮体积低估与呼吸率相关,但与PEEP,应急或峰值呼吸流量无关.
- 头盔输入不足导致了大量的潮体积低估 (偏差为-93.3 ± 83.9毫升).
结论:
- 通过外流信号分析测量潮体积是可行的,准确的,有足够的头盔入流.
- 不足的流量损害了测量的准确性,导致低估.
- 需要进一步的体内研究来证实这些发现在临床环境中.
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