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首页> 外文期刊>Optical and quantum electronics >A long-period fibre grating monitor of respiratory volumes for the use in non-invasive mechanical ventilation
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A long-period fibre grating monitor of respiratory volumes for the use in non-invasive mechanical ventilation

机译：用于无创机械通气的呼吸量的长周期光纤光栅监测器

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The ventilators involved in mechanical ventilation are usually equipped with pneumatic sensor detecting patient's own respiratory effort in order to assist spontaneous breathing. However, the interface of the mask with the patient promotes air leaks that affect the measurement of pneumatic variables and hence induces patient-ventilator asynchrony. In this paper we describe a new method and apparatus for continuous monitoring of the respiration based on the measurement of chest wall movements. The proposed solution uses a long-period fibre grating sensor attached to patient's thorax and a simple and cost-effective monochromatic measurement scheme. On a set of healthy volunteers, we have established the linear correlation between the change in local torso curvature and the tidal volume during clinically relevant breathing patterns. The chest-wall movement measured by the grating advances with respect to the air-flow signal by about 200 ms, indicating the possibility to lead to more confidence triggering decision. The proposed scheme is non-invasive, simple, low-cost, and immune to air-leaks and drifts that are limiting factors in the currently standard pneumatic measurement techniques.
机译：用于机械通气的呼吸机通常配备有气动传感器，以检测患者自身的呼吸努力，以帮助自发呼吸。然而，面罩与患者的界面促进了漏气，从而影响了气动变量的测量，因此引起了患者-呼吸机的异步。在本文中，我们介绍了一种基于测量胸壁运动来连续监测呼吸的新方法和设备。所提出的解决方案使用附接到患者胸腔的长周期光纤光栅传感器以及简单且经济高效的单色测量方案。在一组健康的志愿者中，我们建立了临床相关呼吸模式期间局部躯干曲率变化与潮气量之间的线性相关性。光栅测量的胸壁运动相对于气流信号前进约200 ms，这表明有可能导致更多的置信度触发决策。所提出的方案是非侵入性的，简单的，低成本的，并且不受空气泄漏和漂移的影响，空气泄漏和漂移是当前标准气动测量技术中的限制因素。

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