A closed-loop system for control of the fraction of inspired oxygen and the positive end-expiratory pressure in mechanical ventilation

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• 作者：Fleur T. Tehrani
• 关键词：Mechanical ventilation ; Oxygen ; Closed-loop control ; Fraction of inspired oxygen ; Positive end-expiratory pressure
• 刊名：Computers in Biology and Medicine
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：42
• 期：11
• 页码：1150-1156
• 全文大小：1003 K

文摘

A system for automatic control of the fraction of inspired oxygen (F_IO2), and positive end-expiratory pressure (PEEP) for patients on mechanical ventilation is presented. In this system, F_IO2 is controlled by using two interacting mechanisms; a fine control mechanism and a fast stepwise procedure used when patient's oxygen saturation level (S_pO2) falls abruptly. The PEEP level is controlled automatically and in relation to F_IO2 to prevent hypoxemia. The system has been tested by using bench studies and computer simulations. The results show the potential of the system as an aide in effective oxygenation of patients on mechanical ventilation.