What reason does infantile bronchiolitis have

summary

It is estimated that most people have heard of infantile bronchiolitis, but they do not really understand it. Bronchiolitis in children refers to inflammation of the bronchus, which often occurs in children. Most of them occur in winter. The pathological changes of bronchiolitis mainly occur in the bronchioles of the lung, that is, the bronchioles, so the disease is called "bronchiolitis". It is usually a complication caused by common cold, influenza and other viral infections, and it may also be caused by bacterial infection. It is a common acute lower respiratory tract infection in children. So, what are the causes of bronchiolitis in children? Let's get to know!

What reason does infantile bronchiolitis have

First, the main pathogen of bronchiolitis is respiratory syncytial virus. A few cases can be caused by Mycoplasma pneumoniae. After infection with the virus, the bronchioles became congested, edematous, mucus secretion increased, and the necrotic mucosal epithelial cells fell off and blocked the lumen, leading to obvious emphysema and atelectasis.

Second: bronchiolitis in children is mainly caused by mixed infection of virus and bacteria. According to the epidemiological investigation, it is mainly rhinovirus, syncytial virus, influenza virus and rubella virus. The more common bacteria are pneumococcus, Staphylococcus, etc. In addition, sudden change of temperature, dirty air, anatomical and physiological characteristics of children's respiratory tract, allergic factors and low immune function are the predisposing factors of the disease.

Third: bronchiolitis in children is caused by Mycoplasma pneumoniae. In the past, influenza bacilli were occasionally isolated from children with this disease. In rare cases, they may be pathogenic bacteria, but they may also be carrier or mixed infection of virus and bacteria. We should keep these knowledge points in mind!

matters needing attention

Bronchiolitis in children refers to inflammation of the bronchus, which often occurs in children. Most of them occur in winter. The pathological changes of bronchiolitis mainly occur in the bronchioles of the lung, that is, the bronchioles, so the disease is called "bronchiolitis", which is usually a complication caused by common cold, influenza and other viral infections