pulmonary emphysema

What is emphysema? 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. What causes emphysema? 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. Who is at risk for emphysema? The risk factors for emphysema include: Smoking. This the main risk factor. Up to 75% of people who have emphysema smoke or used to smoke. Long-term exposure to other lung irritants , such as secondhand smoke, air pollution, and chemical fumes and dusts from the environment or workplace. Age. Most people who have emphysema are at least 40 years old when their symptoms begin. Genetics. This includes alpha-1 antitrypsin deficiency, which is a genetic condition. Also, smokers who get emphysema are more likely to get it if they have a family history of COPD. What are the symptoms of emphysema? 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: Frequent coughing or wheezing A cough that produces a lot mucus Shortness of breath, especially with physical activity A whistling or squeaky sound when you breathe Tightness in your chest 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. How is emphysema diagnosed? Your health care provider may use many tools to make a diagnosis: A medical history, which includes asking about your symptoms A family history Other tests, such as lung function tests , a chest x-ray or CT scan , and blood tests What are the treatments for emphysema? There is…