Asthma is a common disease, with about 30 million people suffering from it in China, and in severe cases it can be fatal. But it is not hopeless, because with standardized treatment, close to 80% of asthma patients can be very well controlled, even without affecting their work and life. Although with the advancement of technology, the treatment of asthma has become very complete, especially the emergence of sprays, which makes the prevention and treatment of asthma very convenient. But have you paid attention to the precautions for the use of sprays? First of all, the correct way to use aerosol: 1. Remove the cap of the aerosol and shake the aerosol bottle well to make the liquid in the bottle evenly mixed. This is done because many aerosols are two-phase aerosols, i.e.: solution-type aerosols, consisting of a uniform liquid phase formed by the drug and the throwing agent and the gas phase formed by the throwing agent partially volatilized by the throwing agent. Therefore, shaking is a very critical step. 2.Connect the aerosol to the fog storage tank, tilt your head back as far as possible to make the inhalation channel straight, place the nozzle of the fog storage tank between your lips, gently bite the nozzle with your teeth, and wrap your mouth and lips around the nozzle of the fogging tank. 3, after deep breathing, while pressing the aerosol slowly and deeply inhale, so that the aerosol sprayed into the fog storage can slowly enter the airway with the inhaled airflow. 4.Hold your breath for about 10 seconds so that the drug can better enter the airway and lungs. 5.Start gargling with water immediately and spit out the mouthwash, which is a very important step. Because the drugs in the aerosol generally have hormones, if you do not rinse your mouth in time after sucking, it is easy to cause mycotic infections in the oropharynx, as well as side effects caused by long-term chronic stimulation of hormones after systemic absorption, and such side effects are quite serious. Usually after one suction, you have to wait for a minute before the second one, so as to achieve the effect of relieving asthma. Next, talk about the various types of aerosols. According to the type of drugs used, aerosols can be divided into bronchodilators, anti-inflammatory and asthma medications, and anti-allergy and asthma medications. Among them, the common albuterol aerosol and asthma aerosol belong to bronchodilators, which mainly dilate the bronchial muscles and relieve bronchospasm, and can quickly relieve acute respiratory distress, whose contraindications can be referred to the manual. Anti-inflammatory and asthma medicine such as beclomethasone propionate aerosol, beclomethasone is a common hormone, this product is not easy to cause systemic adverse reactions, a few patients have dry mouth, hoarseness, throat discomfort and other adverse reactions. Anti-allergic wheezing drugs such as sodium cromoglycate aerosol are only suitable for allergic asthma. Bronchial asthma is an inflammatory disease, and its local manifestation is bronchospasm, so the only aerosol for asthma treatment is the simultaneous use of anti-inflammatory drugs and bronchodilators to achieve better treatment. Finally, the side effects of aerosols need to be clarified. First, drug resistance: continuous inhalation of a bronchodilator drug, the bronchodilator effect of the drug is significantly weakened, so that patients unconsciously increase the amount of medication, resulting in a vicious circle; second, masking airway inflammation: the anti-inflammatory effect of aerosol on asthma is limited, can only make the early symptoms reduce, and can not change their primary disease, such as over-dependence on it or overuse, due to masking the underlying airway infection, resulting in Asthma aggravation; Third, cardiac reactions: arbitrarily increasing the dose will have a strong stimulating effect on the heart muscle, which can promote tachycardia, arrhythmia, and even cause sudden death due to myocardial ischemic necrosis, especially for people who already have myocardial hypoxia or arrhythmia. Therefore, asthma aerosol is more suitable for emergency treatment of acute asthma attacks, and it should not be used as a routine treatment. When the asthma symptoms are relieved, the patient should go to the hospital as soon as possible to treat the cause. Especially those old patients, when western medicine is not effective or cannot tolerate its side effects, can consider receiving comprehensive treatment such as Chinese medicine, acupuncture, winter and summer acupressure, and winter poultices.