Chronic Obstructive Pulmonary Disease



Chronic obstructive pulmonary disease (COPD) is a long-term lung disease. COPD makes it difficult to move air in and out of the lungs. It will make breathing difficult. COPD includes:
The changes to lung tissue differ with the 2 diseases. However, they often occur together. The causes and treatment of each condition are similar.
Normal and Emphysemic Lung
Normal Lung and Emphysemic Lung
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COPD is caused by damage to the lungs. This damage is caused by:

Risk Factors

COPD is more common in adults who are older than 40 years old.
Factors that increase your chance of developing COPD include:


Early symptoms of COPD include:
As the disease progresses, symptoms may include:


You will be asked about your symptoms and medical history. A physical exam will be done.
Your doctor will need to test how impaired your lungs are. This may be done with:
Your doctor may also need detailed pictures of your lungs. This may be done with:


There is no cure for COPD. Treatment aims to ease symptoms and improve quality of life.
Treatment includes:

Smoking Cessation

Quitting smoking slows the disease. It is the most important part of treatment. There are many programs to help you quit, including:
  • Behavior change program
  • Medication
  • Combination of behavior program and medication

Environmental Management

Limit the number of irritants in the air you breathe. It may help make breathing easier. Avoid smoke, dust, smog, extreme heat or cold, and high altitudes.


Medication for COPD may help by:
  • Opening the airways
  • Relaxing the breathing passages
  • Decreasing inflammation
  • Treating lung infections (antibiotics)
Some medication may be taken as pills or liquids. Others are inhaled medications that are delivered directly to the lungs.


The flu and pneumonia can make your symptoms worse. Get vaccinated against pneumonia and the flu . The flu vaccine may also reduce COPD flare-ups.


Oxygen therapy may be helpful if the oxygen levels in your blood are too low. It can relieve trouble breathing and improve energy. You may only need it for specific activities. It could also be given throughout the day.


Special exercises can strengthen chest muscles. This can make it easier to breathe.
Regular physical activity can reduce the workload on your lungs. It helps build up endurance. Physical activity is also associated with improved quality of life. Follow your doctor's recommendations for activity levels and restrictions.

Breathing and Coughing Techniques

Special methods of breathing can help bring more air into your lungs. It can also help force trapped air out of your lungs. Effective coughing techniques can help clear mucus from your lungs. Ask your doctor if these techniques can help you. Some examples include:
  • Pursed-lip breathing
  • Controlled coughing technique


Eating habits to consider with COPD:
  • Eat a healthy diet. It should be low in saturated fat. It should also be rich in fruits, vegetables , and whole grain foods.
  • Maintain a normal weight. Excess weight causes the lungs and heart to work harder.
  • It may be hard to eat because you feel full. Try eating several smaller meals during the day. This is better than a few large meals.
  • Slow down your eating pace. This will make it easier to breathe.
  • If you need to gain weight, add food or drinks throughout the day. Talk to a dietitian about how many calories you need each day.

Lifestyle Changes

The following may help you manage COPD symptoms and avoid flare-ups:
  • Pace your activities.
  • Learn relaxation techniques and other methods to manage stress.
  • Seek emotional support from professionals, family, and friends. Anxiety can increase the rate of respiration. This makes breathing more strenuous.


A small number of patients may benefit from surgery. Surgery options include removing a part of the lung. You could also have a lung transplant.


Take these steps to reduce your chance of developing COPD:


American Lung Association

National Lung Health Education Program


Canadian Lung Association

Health Canada


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