Ventilator performances for non-invasive ventilation: a bench study.

IF 3.6 3区 医学 Q1 RESPIRATORY SYSTEM
Christian Caillard, Emeline Fresnel, Elise Artaud-Macari, Antoine Cuvelier, Fabienne Tamion, Maxime Patout, Christophe Girault
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引用次数: 0

Abstract

Introduction: A wide range of recent ventilators, dedicated or not, is available for non-invasive ventilation (NIV) in respiratory or intensive care units (ICU). We conducted a bench study to compare their technical performances.

Methods: Ventilators, including five ICU ventilators with NIV mode on, two dedicated NIV ventilators and one transport ventilator, were evaluated on a test bench for NIV, consisting of a 3D manikin head connected to an ASL 5000 lung model via a non-vented mask. Ventilators were tested according to three simulated lung profiles (normal, obstructive, restrictive), three levels of simulated air leakage (0, 15, 30 L/min), two levels of pressure support (8, 14 cmH2O) and two respiratory rates (15, 25 cycles/min).

Results: The global median Asynchrony Index (AI) was higher with ICU ventilators than with dedicated NIV ventilators (4% (0; 76) vs 0% (0; 15), respectively; p<0.05) and different between all ventilators (p<0.001). The AI was higher with ICU ventilators for the normal and restrictive profiles (p<0.01) and not different between ventilators for the obstructive profile. Auto-triggering represented 43% of all patient-ventilator asynchrony. Triggering delay, cycling delay, inspiratory pressure-time product, pressure rise time and pressure at mask were different between all ventilators (p<0.01). Dedicated NIV ventilators induced a lower pressure-time product than ICU and transport ventilators (p<0.01). There was no difference between ventilators for minute ventilation and peak flow.

Conclusion: Despite the integration of NIV algorithms, most recent ICU ventilators appear to be less efficient than dedicated NIV ventilators. Technical performances could change, however, according to the underlying respiratory disease and the level of air leakage.

无创通气的呼吸机性能:工作台研究。
导言:目前有多种专用或非专用呼吸机可用于呼吸科或重症监护室(ICU)的无创通气(NIV)。我们进行了一项工作台研究,以比较它们的技术性能:在无创通气试验台上对通风机进行了评估,其中包括五台开启无创通气模式的 ICU 通风机、两台专用无创通风机和一台转运通风机,无创通气试验台由三维人体模型头和 ASL 5000 肺部模型(通过无通气面罩连接)组成。根据三种模拟肺廓(正常、阻塞性、限制性)、三种模拟漏气水平(0、15、30 升/分钟)、两种压力支持水平(8、14 cmH2O)和两种呼吸频率(15、25 次/分钟)对呼吸机进行了测试:结果:ICU呼吸机的总体不同步指数(AI)中位数高于专用NIV呼吸机(分别为4% (0; 76) vs 0% (0; 15);P结论:尽管整合了NIV算法,但NIV呼吸机的总体不同步指数(AI)中位数仍高于专用NIV呼吸机(分别为4% (0; 76) vs 0% (0; 15)):尽管集成了 NIV 算法,但最新的 ICU 呼吸机的效率似乎低于专用 NIV 呼吸机。不过,技术性能会因潜在的呼吸系统疾病和漏气程度而发生变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
BMJ Open Respiratory Research
BMJ Open Respiratory Research RESPIRATORY SYSTEM-
CiteScore
6.60
自引率
2.40%
发文量
95
审稿时长
12 weeks
期刊介绍: BMJ Open Respiratory Research is a peer-reviewed, open access journal publishing respiratory and critical care medicine. It is the sister journal to Thorax and co-owned by the British Thoracic Society and BMJ. The journal focuses on robustness of methodology and scientific rigour with less emphasis on novelty or perceived impact. BMJ Open Respiratory Research operates a rapid review process, with continuous publication online, ensuring timely, up-to-date research is available worldwide. The journal publishes review articles and all research study types: Basic science including laboratory based experiments and animal models, Pilot studies or proof of concept, Observational studies, Study protocols, Registries, Clinical trials from phase I to multicentre randomised clinical trials, Systematic reviews and meta-analyses.
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