Three causes of chronic bronchitis

summary

Online search for chronic bronchitis, and it has a lot of related topics, including what is chronic bronchitis, how to prevent, how to treat and so on. Today, we're not going to talk about prevention and treatment. Let's check the causes of several common chronic bronchitis for you first. Only when we find the causes can we find the right medicine, so as to achieve the effect of getting half the result with twice the effort.

Three causes of chronic bronchitis

1. Chronic bronchitis: chest X-ray showed increased, thickened and disordered lung markings, and localized emphysema in the lower lung field. 1） Smoking: it is the main factor of the disease. Cigarette contains Tar Nicotine and cyanuric acid and other chemicals, which can damage airway epithelial cells, reduce ciliary movement and phagocytosis of macrophages, lead to the decline of airway purification function, stimulate submucosal receptors, hyperfunction of parasympathetic nerve, cause contraction of bronchial smooth muscle, increase airway resistance, and increase the number of glands Increased secretion, goblet cell proliferation, bronchial mucosal congestion and edema, mucus accumulation are easy to induce infection.

2. Harmful gases of air pollution, such as sulfur dioxide, nitrogen dioxide, chlorine, gas and ozone, have stimulating and cytotoxic effects on airway mucosa epithelium. It is reported that when the smoke or sulfur dioxide in the air exceeds 1000 μ g / m3, the acute attack of chronic bronchitis will increase significantly. Other dusts, such as silicon dioxide, coal dust, sugarcane dust, cotton dust, etc., can also stimulate and damage bronchial mucosa, making the lung clear Can be damaged to create conditions for bacterial infection.

3. Infection factors: infection is one of the important factors in the occurrence and development of chronic bronchitis. Viral mycoplasma and bacterial infection are the main causes of acute attack of the disease. Influenza virus, rhinovirus, adenovirus and respiratory syncytial virus are the common causes of viral infection. Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis and Staphylococcus are the most common causes of bacterial infection Virus or mycoplasma infection occurs on the basis of damaged airway mucosa.

matters needing attention

The above is the cause of chronic bronchitis, affected by external factors, but also affected by their own. No matter what kind of factors, we should exercise ourselves well, strengthen our physical quality, so as to enhance our ability to resist all kinds of bacteria.