نام فایل : برونشيت مزمن انگليسي

فرمت : .doc

تعداد صفحه/اسلاید : 8

حجم : 5 مگابایت

Chronic Bronchitis
What is chronic bronchitis?
Chronic bronchitis is a long-term inflammation of the bronchi, which results in increased production of mucus, as well as other changes.
To be classified as chronic bronchitis:
cough and expectoration must occur most days for at least three months per year, for two years in a row.
other causes of symptoms, such as tuberculosis or other lung diseases, must be excluded.

Chronic bronchitis is an inflammation, or irritation, of the airways in the lungs. Airways are the tubes in your lungs that air passes through. They are also called bronchial tubes. When the airways are irritated, thick mucus forms in them. The mucus plugs up the airways and makes it hard for you to get air into your lungs. Symptoms of chronic bronchitis include a cough that produces mucus (sometimes called sputum), trouble breathing and a feeling of tightness in your chest.
What causes chronic bronchitis?
Cigarette smoking is the main cause of chronic bronchitis. When tobacco smoke is inhaled into the lungs, it irritates the airways and they produce mucus. People who have been exposed for a long time to other things that irritate their lungs, such as chemical fumes, dust and other substances, can also get chronic bronchitis.
What are the symptoms of chronic bronchitis?
The following are the most common symptoms for chronic bronchitis. However, each individual may experience symptoms differently. Symptoms may include:
cough
expectoration (spitting out) of mucus
Chronic bronchitis may cause:
frequent and severe respiratory infections
narrowing and plugging of the breathing tubes (bronchi)
difficult breathing
disability
Other symptoms may include:
...