手术前为什么不能吃饭喝水 郭晓艳 北京天伦医院

手术前为什么不能吃饭喝水 郭晓艳 北京天伦医院
手术前不能吃饭喝水的原因：为了防止在麻醉或手术过程中出现呕吐反应，而引起窒息或吸入性的肺炎。这种呕吐反应，在麻醉过程中，特别是在气管插管吸痰或者是拔出管的时候，随时可能发生，因为一些麻醉药物能够减弱人体正常的保护性反射。比如肺对内融物有保护性咳嗽反射，防止他们进入肺内，但是麻醉以后，这种反射都消失了，而胃酸对肺的刺激非常大，一旦进入肺以内，常引起吸入性的肺炎，可导致呼衰或者影响生命。

Why can't we eat and drink water before surgery
Reasons for not eating and drinking water before operation: in order to prevent vomiting reaction during anesthesia or operation, And cause suffocation or aspiration pneumonia. This vomiting reaction, During anesthesia, Especially when tracheal intubation is used to aspirate sputum or when the tube is pulled out, At any time, Because some anesthetics can weaken the normal protective reflex of human body. For example, the lung has a protective cough reflex to the internal fusion, To prevent them from entering the lungs, But after anesthesia, And the reflections are gone, And stomach acid is very irritating to the lungs, Once inside the lungs, It often causes aspiration pneumonia, Can cause respiratory failure or affect life.