Emphysema is a type of COPD (chronic obstructive pulmonary disease). COPD is a group of lung diseases that make it hard to breathe and get worse over time. The other main type of COPD is chronic bronchitis. Most people with COPD have both emphysema and chronic bronchitis, but how severe each type is can be different from person to person.
Emphysema affects the air sacs in your lungs. Normally, these sacs are elastic or stretchy. When you breathe in, each air sac fills up with air, like a small balloon. When you breathe out, the air sacs deflate, and the air goes out.
In emphysema, the walls between many of the air sacs in the lungs are damaged. This causes the air sacs to lose their shape and become floppy. The damage also can destroy the walls of the air sacs, leading to fewer and larger air sacs instead of many tiny ones. This makes it harder for your lungs to move oxygen in and carbon dioxide out of your body.
The cause of emphysema is usually long-term exposure to irritants that damage your lungs and the airways. In the United States, cigarette smoke is the main cause. Pipe, cigar, and other types of tobacco smoke can also cause emphysema, especially if you inhale them.
Exposure to other inhaled irritants can contribute to emphysema. These include secondhand smoke, air pollution, and chemical fumes or dusts from the environment or workplace.
Rarely, a genetic condition called alpha-1 antitrypsin deficiency can play a role in causing emphysema.
The risk factors for emphysema include
At first, you may have no symptoms or only mild symptoms. As the disease gets worse, your symptoms usually become more severe. They can include
Some people with emphysema get frequent respiratory infections such as colds and the flu. In severe cases, emphysema can cause weight loss, weakness in your lower muscles, and swelling in your ankles, feet, or legs.
To make a diagnosis, your health care provider
When diagnosed with emphysema, the severity of the disease’s progression can be measured in several emphysema stages, using two different testing methods: the GOLD Emphysema Staging System and the BODE Emphysema Staging System. On one hand, the GOLD system uses the FEV1 metric to determine its staging, while on the other, the BODE System is a bit more comprehensive, working to stage emphysema as well as quality of life within a patient.
The Gold System can be broken down into four stages:
*Typically those with Stage IV emphysema are on supplemental oxygen
When it comes to measuring quality of life, the BODE System is preferred which collects metrics such as body mass index, airflow limitation (PFTs), breathlessness and exercise capacity through a six-minute walk test.
There is no cure for emphysema. However, treatments can help with symptoms, slow the progress of the disease, and improve your ability to stay active. There are also treatments to prevent or treat complications of the disease. Treatments include
If you have emphysema, it’s important to know when and where to get help for your symptoms. You should get emergency care if you have severe symptoms, such as trouble catching your breath or talking. Call your health care provider if your symptoms are getting worse or if you have signs of an infection, such as a fever.
Since smoking causes most cases of emphysema, the best way to prevent it is to not smoke. It’s also important to try to avoid lung irritants such as secondhand smoke, air pollution, chemical fumes, and dusts.
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