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呼吸机被用来抢救呼吸衰竭和呼吸停止,为治疗原发疾病争取时间起着很重要的作用。但目前国内生产的呼吸机有十多种,其结构,性能各有特点,必须掌握它才能发挥它的效用。一、呼吸机的工作原理任何呼吸机的工作原理都是外加通气动力,建立肺泡和大气之间的压力差,当外加压力超过肺泡压时,空气流入肺泡造成吸气;释去外加压力,或加以负压使肺泡内气压大于外气压,肺泡内气体排出造成呼气。呼吸机的呼、吸转换控制是按予定的条件
Ventilators are used to rescue respiratory failure and stop breathing, playing a very important role in gaining time for the treatment of primary disease. However, there are currently over ten kinds of ventilators in China. Their structure and performance have their own characteristics. They must master it before they can exert their effectiveness. First, the working principle of the ventilator Any ventilator’s working principle is the external ventilation power, the establishment of the pressure difference between the alveoli and the atmosphere, when the external pressure exceeds the alveolar pressure, the air flow into the alveolar cause inhalation; release of external pressure, or Negative pressure to the alveolar pressure greater than the external pressure, the alveolar gas exhalation caused by exhalation. Ventilator call, suction switch control is scheduled for the conditions