2, pay attention to keep warm, avoid catching cold and prevent colds.

3. Improve environmental sanitation, do a good job in personal labor protection, and eliminate and avoid the impact of smoke and irritating gases on the respiratory tract.

The pathogenesis of emphysema is not fully understood. It is generally believed that it is related to bronchial obstruction and protease-antiprotease imbalance. Smoking, infection and air pollution cause bronchiolitis, and the lumen is narrow or blocked. When inhaling, the bronchiole cavity expands and air enters the alveoli; When exhaling, the lumen contracts, the air stays, and the pressure in the alveoli increases, leading to excessive expansion and even rupture of the alveoli.

Extended data

Chronic bronchitis and bronchial asthma are chronic obstructive pulmonary diseases. Both chronic bronchitis and bronchial asthma may be complicated with obstructive emphysema. But these three are both related and different.

The pre-emphysema lesions of chronic bronchitis are mainly confined to bronchi, accompanied by obstructive dyspnea, but the degree is mild and the diffusion function is generally normal. The pathogenesis of bronchial asthma is characterized by obstructive ventilation disorder and excessive pulmonary inflation. The distribution of air can be very uneven. However, the above changes are reversible and have a good response to inhalation of bronchodilators. There was no significant change in diffuse sexual dysfunction.

Baidu encyclopedia-emphysema