Suarez Alvarez J R, Meijide Garcia J L, Rubianes Lopez R
Crit Care Med. 1984 Dec;12(12):1057-62. doi: 10.1097/00003246-198412000-00012.
The prototype of a fully computerized servoventilator monitor was successfully used to support ventilation in 25 adult patients during a total of 2030 patient hours. This prototype is volume-cycled in active inspiration and time-cycled in the inspiratory pause. During time-cycled expiration, it functions as a constant atmospheric pressure generator, or constant positive-pressure generator if positive end-expiratory pressure is applied. From the information received through a pneumotachometer placed near the patient's airway, a microprocessor controls the mode of ventilation, and monitors and processes the ventilatory data. This computerized device has a high-security keyboard and a visual display screen. Ventilatory data are stored in a timed memory and presented on the screen. By measuring compliance and airway resistance with a standardized cycle, it is possible to define the patient's ventilatory mechanics by a mathematical model and predict the result of any proposed change in preset variables.
一种全电脑化伺服呼吸机监测仪的原型已成功用于25例成年患者的通气支持，累计达2030个患者小时。该原型在主动吸气时为容积切换，在吸气暂停时为时间切换。在时间切换呼气过程中，它可作为恒定大气压发生器，如果应用呼气末正压，则可作为恒定正压发生器。通过放置在患者气道附近的呼吸流速计接收的信息，微处理器控制通气模式，并监测和处理通气数据。这种电脑化设备有一个高安全性键盘和一个可视显示屏。通气数据存储在定时存储器中并显示在屏幕上。通过用标准化周期测量顺应性和气道阻力，有可能通过数学模型定义患者的通气力学，并预测预设变量中任何提议变化的结果。
