Precautions for laryngeal mask
1. Low tidal volume 6 ~ 8ml/kg, respiratory rate 10 ~ 14 times/min.
2. The internal pressure of the capsule is less than 60cmH2O.
3. If the laryngeal mask of the silicone rubber mask is used, N2O can enter the mask capsule through the silicone rubber, which can increase the pressure in the mask capsule. It is necessary to monitor the pressure in the mask capsule to avoid the pressure >60cmH2O.
4. If a double laryngeal mask is used, it is recommended that the conventional transesophageal drainage tube be inserted into the gastric tube. The gastric tube is first inhaled actively and then opened, and the negative pressure aspirator is not necessary to continuously attract the gastric tube.
5. The principle of laryngeal mask placement is jaw joint relaxation, according to the needs of the operation to decide whether to give muscle relaxants, if not to give muscle relaxants, can be done to preserve spontaneous breathing general anesthesia.
6. Apply lubricating oil under the laryngeal mask, as little as possible or do not apply in front so as not to induce cough after insertion; The laryngeal mask should be placed gently to avoid airway injury caused by violence.
7. Proper sleep, analgesia and muscle relaxation are required during anesthesia to avoid too shallow anesthesia.
8. At the end of the operation, adults can pull out the laryngeal mask after waking up, and children can pull out the laryngeal mask under deep anesthesia and right position.
9. Application of laryngeal mask in difficult airway
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