一种用于无创正压通气的新型主流二氧化碳监测仪系统。

A Novel Mainstream Capnometer System for Non-invasive Positive Pressure Ventilation.

作者信息

Baba Yuya, Takatori Fumihiko, Inoue Masayuki, Matsubara Isao

出版信息

Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:4446-4449. doi: 10.1109/EMBC44109.2020.9175950.

DOI:10.1109/EMBC44109.2020.9175950

Abstract

Capnometry is a method to measure carbon dioxide (CO) in exhaled gas and it has been used to monitor patient respiratory status. CO monitoring is also used for patients receiving non-invasive positive pressure ventilation (NPPV) therapy during mechanical ventilation. Ventilators actively dilute exhaled gas during non-invasive ventilation. In order to accurately measure end-tidal CO, an adequate amount of expired gas needs to be filled in a CO measurement cell before expiratory positive airway pressure (EPAP) gas from the ventilator arrives to the cell. This is the reason why it is difficult to measure CO stably during non-invasive ventilation using the conventional CO measurement method. Therefore, we developed NPPV cap-ONE mask, which accurately measures CO in exhaled gas during non-invasive ventilation. In this study, we evaluated the basic performance of the NPPV cap-ONE mask system. The NPPV cap-ONE mask system could accurately measure CO in exhaled gas comparing to the conventional device in this study.

摘要

二氧化碳测定法是一种测量呼出气体中二氧化碳（CO）的方法，已被用于监测患者的呼吸状态。CO监测也用于在机械通气期间接受无创正压通气（NPPV）治疗的患者。在无创通气期间，呼吸机主动稀释呼出气体。为了准确测量呼气末CO，在呼吸机的呼气末正压（EPAP）气体到达测量单元之前，需要在CO测量单元中充入足够量的呼出气体。这就是为什么使用传统的CO测量方法在无创通气期间难以稳定测量CO的原因。因此，我们开发了NPPV cap-ONE面罩，它能在无创通气期间准确测量呼出气体中的CO。在本研究中，我们评估了NPPV cap-ONE面罩系统的基本性能。与本研究中的传统设备相比，NPPV cap-ONE面罩系统能够准确测量呼出气体中的CO。