Question 1: What kind of nebulizer to choose? Usually, pediatric nebulizer inhalation therapy is mainly for lower respiratory tract diseases, such as bronchial asthma, etc. Air compression pump or oxygen-driven nebulizer inhalation is generally used. The ultrasonic nebulizer used in the past is not effective for the lower respiratory tract because the particles are too large and can only be deposited in the oropharynx and cannot reach the lower respiratory tract. Question 2: Is it appropriate to adjust the oxygen flow rate to 6 ~ 8 L/min? If the oxygen flow rate is too small, the power energy is not enough and the nebulized particles may not reach 2 ~ 6 μm in diameter and cannot enter the lower respiratory tract. Pediatric nebulizer inhalation therapy usually treats lower respiratory tract diseases mainly, such as bronchial asthma. It is generally recommended to adjust the oxygen flow rate to 6 ~ 8 L/min for oxygen-driven nebulized inhalation, which can meet the above requirements. The size of the sprayed particles during nebulization, sufficient pressure is the basic condition, and may also be related to the nozzle caliber, distance, etc. Question 3: Is there an easy way to distinguish the size of the atomized particles? The diameter of aerosolized particles is 2 ~ 6 μm, while the general ultrasonic atomization is not an aerosol, but a water mist. The easiest way is to take a piece of paper to the aerosol, the one that can make the paper wet is water mist, and the one that cannot make the paper wet is aerosol particles – that is, the lower respiratory tract inhalation particle requirement is met. Question 4: The nebulizer liquid is quickly used up, how much liquid control is more appropriate? Generally, the amount of nebulized inhalation liquid is 4 ~ 6 ml, with a minimum of not less than 4 ml and no more than 6 ml recommended. If the amount of liquid is too small, the amount of medicine reaching the lower respiratory tract will be too small and the effect will be limited; if the amount of liquid is too large, the inhalation time will be too long and the child will not comply and will easily cry and be uncooperative. If the child can cooperate, each nebulized inhalation time is about 10 to 15 minutes, depending on the amount of liquid. Specifically, if you nebulize with just one budesonide 2 ml solution, counting the medication that adheres to the inhalation tube and is deposited in the nebulizer, there may be very little of the 2 ml medication that can really be used. Therefore, it is generally recommended to add 2 ml of physiological saline to the solution, so that the amount of liquid becomes 4 ml, and the actual waste of the active ingredient of the drug is reduced. Question 5: Rinse your mouth after nebulization. 1. Older children should wash their faces and rinse their mouths; 2. Younger children should have their parents feed them some plain water; Question 6: How to use terbutaline injection for pediatric nebulizer inhalation? According to the latest “Guidelines for the diagnosis and prevention of bronchial asthma in children”, the recommended dose of terbutaline is 250-500 μg per inhalation; it should not be used for a long time, and should be used or adjusted under the guidance of a physician if the dosage exceeds 4 times a day or ≥ 50 mg per month.