Asthma Prevention

Asthma prevention should include: ① eliminate or avoid allergy and asthma, a variety of factors; ② early diagnosis, early treatment; ③ positive airway inflammation and control symptoms, prevent disease progression, prevent complications.
1. Prevention of asthma - primary prevention described above, the majority of patients (especially children) in the case of asthma and allergic asthma. Fetal immune response is dominant Th2 response, in late pregnancy, certain factors such as excessive maternal allergen exposure, viral infection can strengthen Th2 response, increased Th1 / Th2 imbalance, if the mother is allergic constitution is more obvious, so try to avoid. In addition, there is sufficient evidence to support the infants of smoking mothers wheezing and asthma can increase the chance after birth, and after birth four to six months of breast-feeding, the baby can reduce the incidence of allergic diseases, pregnancy mothers should avoid smoking, which are an important part of prevention, the impact of asthma related to maternal diet on the fetus, still need more observations.
2. Avoid allergens and motivator - secondary prevention
(1) Avoid allergens: In particular for patients with specific physical, eliminate or avoid contact as much as possible triggers of asthma. Such as house dust mites, pollen, animal fur, which can cause food allergies, drugs, occupational asthma, should be separated from the professional environment.
As mentioned earlier, whether respiratory viruses asthma allergens is still controversial, but there is a close relationship with the development of asthma, especially in children with respiratory syncytial virus, rhinovirus in adults to prevent respiratory viral infections is also important measures to prevent asthma.
(2) prevention and treatment of allergic rhinitis: allergic rhinitis and asthma relationship is very close, it was simple for allergic rhinitis patients were followed up for nearly 20 years and found that nearly 17% of the development of asthma, far higher than (5%); The study also showed that the presence of airway hyperresponsiveness (histamine or methacholine challenge ammonia) 20% to 25% of patients with allergic rhinitis simple, it is considered that some patients may be "subclinical asthma". Patients with asthma associated with allergic rhinitis about 28% to 50%. Recent data indicate that such patients on the basis of the trachea inhaled corticosteroids on the positive control if rhinitis (such as oral non-sedating H1 receptor blockers, nasal inhaled corticosteroids) can significantly reduce the frequency of asthma attacks and alleviate its symptoms, and therefore aggressive treatment of allergic rhinitis in preventing the occurrence of asthma and reduce the attack are valuable.
3. Early diagnosis and treatment to control symptoms and prevent progression of the disease - tertiary prevention