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运用销酸氰钠对平均动脉压实施闭环控制的理论,已在发病期高血压病人的集中监护(CCU)中得到广泛的应用。而本文将上述理论拓展使用到心脏手术中,对病人的血压变化进行控制,为此设计了一套自适应监控装置。该装置通过电极采集压力信号,用比例积分反馈调节器分离识别压力冲击的单次响应特性,对动脉压进行闭环控制,使其维持于平均值;为了保证迅
The theory of using closed-loop control of mean arterial pressure with sodium nitric oxide has been widely used in intensive care (CCU) of patients with essential hypertension. In this paper, the above theory is extended to heart surgery, the patient’s blood pressure control, for which an adaptive monitoring device is designed. The device collects the pressure signal through the electrode, and uses a proportional integral feedback controller to separate and recognize the single response characteristic of the pressure impact, and controls the arterial pressure in a closed loop so as to maintain the average value; in order to ensure the rapid