What is the cause of pus in the lungs

Pus in the lungs is actually a problem of lung abscess, which is mainly caused by some bacterial infection or bronchial obstruction. In particular, due to the decrease in the body's immunity, some pathogenic bacteria invade and cause pneumonia. Therefore, we should also pay attention to the prevention of these bacteria and the treatment of pneumonia.

1. Tooth and periodontal infection: unconsciousness, abuse of ethanol or sedatives, epilepsy, head trauma, cerebrovascular accident, diabetic coma and failure caused by other diseases lead to disappearance of cough reflex and aspiration.

2. Swallowing disorders: benign or malignant esophageal stenosis, medullary paralysis, achalasia, and the presence of pharyngeal pouches leading to aspiration.

3. Mixed infection of various bacteria causing necrotizing pneumonia.

4. Distant hematogenous dissemination? Such as urinary tract infection, abdominal and pelvic abscess, left heart endocarditis, infection caused by various catheters in the body, and infectious thromboangiitis.

5. Existing lung lesions, such as bronchiectasis, bronchial obstruction (tumor, foreign body, congenital abnormality).

6. Primary or secondary immunodeficiency? There are many bacteria that can cause lung abscesses, and most of them are mixed infections, which are generally consistent with the bacteria that exist in the upper respiratory tract and oral cavity, including aerobic, facultative anaerobic and anaerobic bacteria: such as Pneumococcus, Staphylococcus aureus, hemolytic Streptococcus, Proteus, Klebsiella, Escherichia coli, Pseudomonas aeruginosa, Proteus, etc.; anaerobic bacteria include Streptococcus peptone, Pseudomonas aeruginosa, Fusobacterium nucleatum, etc. In recent years, due to the advancement of culture technology, it has been found that the infection rate of inhaled anaerobic bacteria can be as high as 90%.