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Alternative Names Return to top
COPD; Chronic obstructive airway disease; Chronic obstructive lung disease; Chronic bronchitisDefinition Return to top
Chronic obstructive pulmonary disease (COPD) is lung disease that makes it difficult to breathe. Most people with COPD have both emphysema and chronic bronchitis.
Causes Return to top
The leading cause of COPD is smoking. Between 15 - 20% of long-term smokers will develop COPD. Using tobacco for a long time causes lung inflammation and destroys air sacs in the lungs. (In rare cases, non-smokers who lack a protein called alpha-1 anti-trypsin can develop emphysema.)
Other risk factors for COPD are:
Symptoms Return to top
Some people, even those with severe COPD, have few or no symptoms.
Exams and Tests Return to top
People with COPD may make wheezy air sounds, difficult-to-hear air sounds, or normal sounds when the doctor listens to them during an exam. In severe cases, a person with COPD can seem anxious and may breathe through pursed lips (the shape lips make when you whistle).
During a flare of the disease, the muscles between the ribs contract while the person is breathing in (intercostal retraction) and the person will use other muscles to breathe. The number of breaths per minute (respiratory rate) may be high.
A chest x-ray may show that the lung is expanding too much (hyperinflation). A chest CT scan may show emphysema.
A sample of blood taken from an artery (arterial blood gas) can show low levels of oxygen (hypoxemia) and high levels of carbon dioxide (respiratory acidosis). The best test for COPD is lung function testing.
Treatment Return to top
Treatment for COPD includes inhalers that open the airways (bronchodilators) and sometimes theophylline. Patients with COPD must stop smoking. In some cases inhaled steroids are used to reduce lung inflammation. In severe cases or flare-ups, the health care provider may prescribe steroids through a vein (intravenous) or by mouth (oral).
Antibiotics are used during flare-ups of symptoms, because infections can make COPD worse. Some people may need chronic, low-flow oxygen, non-invasive ventilation, or a tube to get oxygen (intubation). Surgery to remove parts of the diseased lung may be helpful for some patients with COPD.
Lung rehabilitation does not cure the lung disease, but it teaches a patient to breathe in a different way so they can stay active.
Lung transplant is sometimes performed for severe cases.
Support Groups Return to top
People often can help ease the stress of illness by joining a support group in which members share common experiences and problems.
See also: Lung disease - support group
Outlook (Prognosis) Return to top
This condition is a long-term (chronic) illness. The disease will get worse if patients keep using tobacco.
Possible Complications Return to top
When to Contact a Medical Professional Return to top
Go to the emergency room or call the local emergency number (such as 911) if you have a rapid increase in shortness of breath or if you develop complications.
Prevention Return to top
Not smoking prevents most COPD. In people who smoke, finding and treating small airway disease and taking part in stop-smoking programs may prevent the disease from getting worse.
References Return to top
Goldman L, Ausiello D. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007. Update Date: 1/18/2008 Updated by: Andrew Schriber, MD, FCCP, Specialist in Pulmonary, Critical Care, and Sleep Medicine, Virtua Memorial Hospital, Mount Holly, New Jersey. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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Page last updated: 25 September 2008 |