The oropharyngeal airway is a kind of hard artificial airway made of elastic rubber and plastic, which is white, flat and curved, and has the functions of facilitating sputum suction and improving ventilation. \x0d\ The use principle of oropharyngeal snorkel is \ rather big than small, rather long than short \ The oropharyngeal airway must extend to the base of the tongue to open the airway, so it is too short to pass through the tongue and cannot open the airway. Therefore, it is very important to choose the appropriate model. \x0d\ Method of placing oropharyngeal airway The operator presses the patient's tongue with the tongue depressor, and the concave surface of oropharyngeal airway immersed in water is upward. Gently press the back of the tongue and put it in, and re-export the pharyngeal airway to the throat at 180. After successful placement, fix one end of 1 adhesive tape on the right cheek with two pieces of adhesive tape with the length of 20 cm ~ 25 cm, and then fix it on the right cheek around the oropharyngeal airway after 1 week. The second strap is fixed on the left cheek in the same way. Placement skills of oropharyngeal snorkel: Before using oropharyngeal snorkel, put the patient's bedside flat so that the patient can take back his head. \x0d\ The conscious operator should explain to the patient the purpose of placing the oropharyngeal ventilation tube and the matters needing attention when cooperation is needed, so as to obtain the cooperation of the patient. If the patient does not cooperate, do not forcibly insert or pull out the pharyngeal airway, so as not to loosen the patient's teeth. We must patiently persuade patients and get cooperation. Ask the patient to open his mouth, and help him to open his mouth with the help of the tongue depressor, and put it into the oropharyngeal airway according to the correct steps. \x0d\ The comatose person puts the tongue depressor into the patient's molar to help him open his mouth, and then gently and accurately puts it into the pharyngeal airway according to the correct steps. If the placement fails, the oropharyngeal airway should be bounced back to the root of the tongue, and the position should be moved again immediately so that the distal end of the oropharyngeal airway can be placed behind the root of the tongue. \x0d\ Precautions for placing oropharyngeal airway \x0d\ 1. Remove the patient's denture before operation to understand the patient's vital signs. Patients with disturbance of consciousness and irritability should be restrained by hands to prevent extubation. 2. Correctly use the skills and methods of placing oropharyngeal airway. \x0d\3, strict aseptic operation, to prevent cross infection. When the oropharyngeal airway needs to be placed continuously, the position should be changed for 2 ~ 3 hours. Do a good job in oral care and cleaning the oropharyngeal tube to prevent oral mucosal ulcers and sputum scabs from blocking the oropharyngeal tube. \x0d\4。 Laryngeal edema, foreign body in trachea, asthma, hyperpharyngeal reflex or central respiratory failure should be regarded as contraindications of oropharyngeal airway. \x0d\5. Do a good job in psychological care, patiently explain to patients that this operation is an important nursing measure, so as to win the cooperation of patients, try to be light and steady during the operation, and relieve the pain of patients. \x0d\6。 After the oropharyngeal airway is placed and fixed accurately, sedatives should be used appropriately for patients who cannot tolerate the oropharyngeal airway. If forced indwelling, it will cause patients to be agitated and increase oxygen consumption. If the placement fails or is ineffective, it is estimated that the condition will not improve quickly, and tracheal intubation or tracheotomy must be chosen to effectively improve ventilation. \x0d\ Disinfection of oropharyngeal airway after each use. Soak in chlorine-containing disinfectant 15 minutes. Then rinse the disinfectant on the oropharyngeal snorkel with clear water and dry it, and put it at the patient's place for later use.