The order of suctioning, suctioning usually suction the sputum in the mouth first, and then suction the sputum in the nose, why should it be like this? Because the lower respiratory tract is relatively sterile, so the upper respiratory tract cannot be sucked first, the upper respiratory tract is bacterial, if the upper respiratory tract is sucked first, the suction tube will carry bacteria, and then suck the lower respiratory tract at this time, it is likely to bring the bacteria from the upper respiratory tract to the lower respiratory tract, resulting in respiratory tract infection, so there is an order for suctioning sputum. If you rely on this order of aspiration, there is usually no big problem, and you can soon get the sputum clean, and you can avoid unnecessary infection as well as trauma, and you can treat the disease very well.