Bronchitis is inflammation of the breathing tubes. These are the airways called bronchi. This inflammation causes too much mucus production and other changes. Although there are several different types of bronchitis, the most common are acute and chronic.
Chronic bronchitis is long-term inflammation of the bronchi. It is common among smokers. People with chronic bronchitis tend to get lung infections more easily. They also have episodes of acute bronchitis during which symptoms are worse. Acute bronchitis is covered in a separate document.
To be classified as chronic bronchitis:
People with chronic bronchitis have chronic obstructive pulmonary disease (COPD). This is a large group of lung diseases that includes chronic bronchitis. These diseases can block air flow in the lungs and cause breathing problems. The two most common conditions of COPD are chronic bronchitis and emphysema.
Chronic bronchitis is not caused by a virus or bacteria. Most experts agree that the main cause of chronic bronchitis is cigarette smoking. Air pollution and your workplace may also play a role, especially when combined with cigarette smoking.
Chronic bronchitis often happens with other lung diseases, such as:
Below are the most common symptoms of chronic bronchitis. But each person may have slightly different symptoms.
Symptoms may include:
People with chronic bronchitis usually have a cough and make mucus for many years before they have shortness of breath.
Chronic bronchitis may cause:
Other symptoms may include:
The symptoms of chronic bronchitis may look like other lung conditions or medical problems. See your health care provider for a diagnosis.
Your health care provider will take a complete medical history and do a physical exam. He or she may order the tests below.
These tests help to measure the lungs' ability to move air in and out of your lungs. The tests are usually done with special machines that you breathe into. They may include the following:
A spirometer is a device used to see how well your lungs are working. Spirometry is using the spirometer to look at your lung function. It is one of the simplest, most common PFTs. It may be used for any or all of these reasons:
This test measures the fastest speed you can blow air out of your lungs. Inflammation and mucus in the large airways in the lungs narrows the airways. This slows the speed of air leaving the lungs and can be measured with a PFM. This measurement is very important in telling how well your disease is being controlled.
This blood test is used to check the amount of oxygen and carbon dioxide in your blood. It also measures the pH (acidity) of your blood.
An oximeter is a small machine that measures the amount of oxygen in your blood. To get this measurement, a small sensor is taped or clipped onto a finger or toe. When the machine is on, a small red light can be seen in the sensor. The sensor is painless, and the red light does not get hot.
This test makes pictures of your internal tissues, bones, and organs, including the lungs.
This imaging test uses a combination of X-rays and computer technology to make horizontal, or axial, images (often called slices) of the body. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than general X-rays.
Treatment for chronic bronchitis is aimed at treating the symptoms. It may include:
Tips to help you get the most from a visit to your health care provider:
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