The ventilator is a device which can control or change the normal physiological respiration of human being, increase the pulmonary ventilation and improve the respiratory function. It is not only the common equipment in hospital but the emergency equipment, which plays a decisive role in the medical equipment in hospital. This paper introduces the program and method of SST (short self test) and EST (extended self test) in PB840 respirator.%呼吸机是一种能代替、控制或改变人正常生理呼吸,增加肺部通气量,改善呼吸功能的装置.呼吸机不仅是医院的常用设备又是急救设备,在医院医疗设备中有着举足轻重的地位.该文详细介绍了PB840呼吸机快速自检(SST)和扩展自检(EST)的程序及方法.
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