COPD
medical conditions

COPD

Explore the available health information, treatment context, and integrative evidence for COPD.

Background
  • Chronic obstructive pulmonary disease (COPD) is a type of lung disease that involves damage or obstruction to the airways of the lungs, making it difficult to breathe. COPD is an overall term referring to a group of chronic lung conditions, most commonly including chronic bronchitis and emphysema, and possibly asthma or asthmatic bronchitis. While chronic bronchitis and emphysema may occur separately, it is common for patients to have both diseases at the same time.
  • Chronic bronchitis is characterized by an ongoing, mucus-producing cough that that occurs most days of the month, three months a year for two consecutive years or more. Constant coughing causes the bronchial tubes to become inflamed. Eventually, the airways become scarred. Long-term irritation also leads to the production of mucus, which further irritates and blocks the bronchial tubes. As a result, less oxygen is able to enter the airways.
  • In addition, the excessive mucus in the bronchial tubes provides an environment for disease-causing bacteria to grow. Therefore, lung infections are common complications of chronic bronchitis.
  • Emphysema is an incurable illness that occurs when the walls between the air sacs (alveoli) in the lungs lose their ability to stretch and recoil, causing shortness of breath (SOB).
  • The Centers for Disease Control (CDC) report that COPD affects up to 24 million Americans, and according to the American Lung Association, is the fourth leading cause of death in the United States. COPD patients typically die from complications, such as severe lung infections, heart problems, or lung cancers.
  • The main risk factor for COPD is smoking. Researchers estimate that smoking causes 80-90% of COPD deaths. According to the American Lung Association, female smokers are nearly 13 times more likely to die from COPD than females who have never smoked. Male smokers are nearly 12 times more likely to die from COPD than males who have never smoked.
  • There is currently no cure for COPD. Instead treatment focuses on reducing the symptoms and complications of the disease. Treatment varies, depending on the specific condition. It can range from medication and oxygen supplementation to transplant surgery. Bronchodilators are commonly used to relax the bronchi muscles in the lungs that can cause bronchospasms and restrict the airways.
Risk Factors and Causes
  • Smoking: The single greatest risk factor for chronic obstructive pulmonary disease (COPD) is smoking. COPD is most likely to develop in cigarette smokers, but cigar and pipe smokers and marijuana smokers also are susceptible. The risk of COPD increases with the number of years and amount smoked.
  • Exposure to secondhand smoke, also known as passive or environmental tobacco smoke, also increases risk of developing COPD. Secondhand smoke is smoke that is inadvertently inhaled from someone else's cigarette, pipe, or cigar.
  • Age: Although the lung damage that occurs in emphysema develops gradually, most people with tobacco-related emphysema begin to experience symptoms of the disease between the ages of 50-60.
  • Exposure to pollution: An individual breathing fumes from certain chemicals, such as chlorine or pesticides, dust from grain, cotton, wood, or working around toxic fumes has an increased risk of developing COPD. Breathing indoor pollutants, such as fumes from heating fuel, as well as outdoor pollutants, such as car exhaust, increases the risk of COPD.
  • Heredity: A rare, inherited deficiency of the protein, alpha-1-antitrypsin (AAt), can cause emphysema, especially before age 50, and even earlier if the individual smokes.
  • Connective tissue disorders: Some conditions that affect connective tissue (provides body framework and support) are associated with emphysema. Connective tissues are the supporting tissues of the body, such as tendons, ligaments, bone, and cartilage. These conditions include cutis laxa (a rare disease that causes premature aging) and Marfan syndrome (a disorder that affects many different organs, especially the heart, eyes, skeleton and lungs).
Signs and Symptoms
  • General: Symptoms of chronic obstructive pulmonary disease (COPD) usually develop gradually over many years. They typically worsen over time. Some patients may suffer from either chronic bronchitis or emphysema, while other may have both diseases.
  • Patients who have had COPD for many years may develop bluish discoloration of the lips and nail beds (cyanosis). This occurs when there is not enough oxygen in the blood. Some patients may develop headaches in the morning because they are unable to remove carbon dioxide from the blood. Many people with COPD also experience weight loss because their body requires more energy to breathe than the average person.
  • Chronic bronchitis: Symptoms of chronic bronchitis include chronic cough, increased mucus that is yellow-greenish in color, frequent clearing of the throat, wheezing, and shortness of breath (SOB). Patients typically experience fatigue because the body has to work harder to get enough oxygen.
  • Emphysema: Shortness of breath (dyspnea), especially during activity, is one of the earliest symptoms of emphysema. As the disease progresses, shortness of breathe becomes constant, even during rest. An individual is likely to feel tired both because it is more difficult to breathe and because the body is getting less oxygen.
  • Other symptoms include distress resulting from the inability to get enough air, wheezing, chronic mucus production, exhaling through pursed (puckered) lips or grunting before exhaling, and needing to lean forward to breathe while sitting. Individuals with emphysema are often thin and have very pink skin. Individuals with advanced disease may have the characteristic barrel chests from the increase in lung size.
Diagnosis
  • Pulmonary function tests (PFTs): Pulmonary function tests (PFTs) can detect chronic obstructive pulmonary disease (COPD) before symptoms are seen. These noninvasive tests measure how much air the lungs can hold and the flow of air in and out of the lungs. They can also measure the amount of oxygen and carbon dioxide exchanged in the lungs. They include a spirometry test and lung volume test.
  • In a spirometry test, a person breathes into mouthpiece that is connected to an instrument called a spirometer. The spirometer records the amount and the rate of air that is breathed in and out over a specified time. Some of the test measurements are obtained by normal, quiet breathing, and other tests require forced inhalation or exhalation after a deep breath.
  • Lung volume measurement detects restrictive lung diseases. In this set of diseases, a person cannot inhale a normal volume of air. Restrictive lung diseases may be caused by inflammation or scarring of the lung tissue (interstitial lung disease) or by abnormalities of the muscles or skeleton of the chest wall.
  • Lung volume measurement can be performed in two ways. The most accurate way is for an individual to sit in a sealed, transparent box called a body plethysmograph. This box looks similar to a telephone booth. The patient then breathes in and out a mouthpiece while inside the plethysmograph. Changes in pressure inside the box allow determination of the lung volume. Lung volume can also be measured when an individual breathes nitrogen or helium gas through a tube for a specified period of time. The concentration of the gas in a chamber attached to the tube is measured, allowing estimation of the lung volume.
  • Chest X-ray: A chest X-ray may be performed to rule out other lung problems, such as lung cancer. Even in the advanced stages of emphysema, chest X-rays are often normal.
  • Blood tests: Arterial blood gases (ABGs) measure how well the lungs transfer oxygen to the bloodstream and how effectively they remove carbon dioxide from the bloodstream. A blood test for the alpha-1-antitrypsin (AAt) gene, which is found in some individuals with emphysema, may also be used.
  • Pulse oximetry: This test involves use of a small device that attaches to the fingertip to measure the amount of oxygen in the blood. To help determine whether or not the individual needs supplemental oxygen, the test may be performed at rest, during exercise, and overnight.
  • Sputum examination: A healthcare provider may take a sample of the patient's mucus (sputum) to help determine the cause of some lung problems. If disease-causing microorganisms (e.g. bacteria) are present, there is infection. If there is blood in the sputum, this may indicate lung damage or lung cancer.
  • Computerized tomography (CT) scan: A CT scan allows a healthcare professional to see the organs in two-dimensional images or "slices." Split-second computer processing creates these images as a series of very thin X-ray beams are passed through the body. A CT scan can detect emphysema sooner than an X-ray can, but it cannot assess the severity of emphysema as accurately as a pulmonary function test.
Complications
  • Death: Individuals with chronic obstructive pulmonary disease (COPD) may die from complications of the disease. Causes of death may include lung cancer, lack of blood flow and oxygen to the brain (stroke), respiratory failure, lung infections, and heart attack.
  • Heart problems: For unknown reasons, COPD increases risk of developing heart disease, including heart attacks. The heart may become enlarged because it is strained. COPD may cause high blood pressure in the arteries that bring blood to the lungs.
  • Infections: Patients with COPD may suffer from frequent infections, including the common cold, flu, and pneumonia. Lung infections make breathing even more difficult for COPD patients. Infections also cause even more irreversible damage to the lung tissue. Patients should talk to their healthcare providers about recommended vaccines. The flu shot is usually recommended in non-allergic COPD patients.
  • Lung cancer: Smokers with chronic bronchitis have a higher risk of developing lung cancer than smokers who do not have chronic bronchitis.
  • Quality of life: People with advanced emphysema are often incapacitated. They experience shortness of breath even when resting or sitting in a chair or bed. Patients should consult their healthcare providers if they experience feelings of sadness, low self-esteem, loss of pleasure, apathy, and sometimes, difficulty functioning for two weeks or longer, with no known underlying cause. These may be signs of depression.
Treatment
  • General: There is currently no cure for chronic obstructive pulmonary disease (COPD). Treatment focuses on reducing symptoms and preventing complications. Patients should take their medications exactly as prescribed to help prevent life-threatening complications, such as heart attack, from occurring. Patients should also tell their healthcare providers if they are taking any other drugs (prescription or over-the-counter), herbs, or supplements, because they may interact with treatment.
  • Smoking cessation: Smoking cigarettes may worsen symptoms of COPD. Therefore, Patients are encouraged to stop smoking. Nicotine replacement products, including the patch (Habitrol®, Nicoderm CQ®, Nicotrol®), chewing gum (Nicorette®), lozenges (Commit®), inhalers (Nicotrol Inhaler®), nasal sprays (Nicotrol NS®), and the antidepressant bupropion (Zyban®), may help patients quit smoking. These drugs work in part by continuing to release low levels of a brain chemical called dopamine. In this way, these smoking cessation medications decrease the craving for nicotine and reduce the signs and symptoms of withdrawal.
  • Varenicline (Chantix®) is a newer drug that works in a similar way. Chantix® stimulates the release of low levels of dopamine in the brain to help reduce the signs and symptoms of withdrawal. In addition, Chantix® blocks nicotine receptors in the brain. The U.S. Food and Drug Administration (FDA) has approved the course of Chantix® treatment for 12 weeks. Individuals who successfully quit smoking during Chantix® treatment may continue to use Chantix® for an additional 12 weeks to further increase the likelihood of long-term smoking cessation. Side effects of Chantix® include changes in taste, nausea, vomiting, gas, and insomnia (inability to sleep).
  • Bronchodilators: Medications called bronchodilators may help relieve coughing, shortness of breath, and difficulty breathing by opening constricted airways. Bronchodilators relax the muscles around the airways, making it easier to breath. Patients typically use an inhaler to take bronchodilators, but tablets are also available for some. Depending on the severity of the disease, a patient may need a short-acting bronchodilator before physical activities, a long-acting bronchodilator that is used every day, or both. Commonly prescribed bronchodilators include albuterol (Ventolin® or Proventil®), metaproterenol (Alupent®), terbutaline (Brethine®), theophylline (Theo-Dur® or Slo-bid®), and perbuterol (Maxair®).
  • Steroids: Steroids are used to prevent and reduce airway swelling, as well as decrease the amount of mucus in the lungs. Steroids may either be inhaled with an inhaler or taken by mouth. Examples of inhaled steroids include beclomethasone (Beclovent® or Vanceril®), budesonide (Pulmicort Respules®), flunisolide (Aerobid®), fluticasone (Flovent®), and triamcinolone (Azmacort®). Inhaled steroids seem to have fewer side effects than steroids that are taken by mouth. These drugs are typically used to treat moderate or severe COPD. Prolonged use of inhaled steroids may weaken the bones and increase the risk of cataracts, diabetes, and heart disease, including high blood pressure, high cholesterol levels, chest pain, and heart attack.
  • Commonly prescribed corticosteroids that are taken by mouth include prednisone (Prednisone Intensol®, Sterapred®, or Sterapred® DS), and triamcinolone (Aristocort®).
  • Liquid corticosteroids, such as Pediapred® or Prelone®, are available for children. These medications can be used short-term for severe symptoms, such as extreme shortness of breath.
  • Leukotriene modifiers: Leukotriene modifiers, such as zafirlukast (Accolate®) or montelukast (Singulair®), are a new type of long-term control medication. They help prevent airway inflammation and swelling. They also help decrease the amount of mucus in the lungs.
  • Supplemental oxygen: Patients who have extreme difficulty breathing may benefit from supplement oxygen. Various forms of oxygen are available, as well as different devices to deliver them to the lungs. A healthcare provider will help the patient set up oxygen for home use.
  • Lung transplant: Patients with severe emphysema may benefit from lung transplantations. Usually just one lung is transplanted because the survival rate has been proven to be higher for individuals with single-lung transplants than for individuals with double-lung transplants.
  • Surgery: In a procedure called lung volume reduction surgery (LVRS), surgeons remove small pieces of damaged lung tissue. The extra space that is created in the lungs after surgery appears to help the remaining lung tissue work more efficiently.
  • Pulmonary rehabilitation program: A key part of COPD treatment involves a pulmonary rehabilitation program, which combines education, exercise training, and behavioral intervention to help restore the individual with emphysema to the highest possible level of independent living.
Prevention
  • Smoking cessation: The primary cause of chronic obstructive pulmonary disease (COPD) is smoking. Patients who do not smoke are less likely to develop COPD than patients who do.
  • Patients who have COPD should not smoke. Smoking cigarettes may worsen symptoms of COPD.
  • Avoidance of respiratory infections: Avoid being around crowds during the cold and flu season (colder months). Washing the hands frequently, along with carrying a small bottle of hand sanitizer, helps keep viruses and bacteria away. Touching the nose or rubbing the eyes increases a patient's risk of developing viral or bacterial infections. Patients should talk to their healthcare providers about recommended vaccines.
  • Control breathing: Patients should talk to their healthcare providers or respiratory therapists to about breathing techniques that may help manage symptoms. Therapists may recommend relaxation exercises that may make it easier to breath. These breathing techniques may also help reduce symptoms of anxiety or distress, which occur in patients who have difficulty breathing.
  • Drink fluids: With COPD, mucus tends to collect in the air passages and can be difficult to clear. Drinking plenty of fluids, such as water or 100% fruit juices, help to keep secretions thin and easy to bring up.
  • Eat healthy foods: A healthy diet may help COPD patients maintain their strength and improve energy. Patients who are underweight should talk to their healthcare providers to determine whether or not they need nutritional supplements.
  • Regular exercise: Regular exercise can significantly increase the capacity for physical activity. Simple breathing techniques (deep breathing) may also help.
  • Visit the doctor: Patients should visit regularly visit their healthcare providers to have their lung function monitored.
References

Natural Standard developed the above evidence-based information based on a thorough systematic review of the available scientific articles. For comprehensive information about alternative and complementary therapies on the professional level, go to www.naturalstandard.com. Selected references are listed below.

  • American Lung Association. .
  • Bateman ED, Feldman C, O'Brien J, et al. Guideline for the management of chronic obstructive pulmonary disease (COPD): 2004 revision. S Afr Med J. 2004 Jul;94(7 Pt 2):559-75. . View Abstract
  • Cazzola M, Donner CF, Hanania NA. One hundred years of chronic obstructive pulmonary disease (COPD). Respir Med. 2007 Jun;101(6):1049-1065. Epub 2007 Mar 23. . View Abstract
  • Centers for Disease Control. .
  • Holzgrabe U, Muth M. [Chronic obstructive pulmonary disease.] [Article in German.] Med Monatsschr Pharm. 2007 May;30(5):168-76; quiz 177-8. . View Abstract
  • La Vecchia C, Fabbri LM. Prevention of death in COPD. N Engl J Med. 2007 May 24;356(21):2211-2; author reply 2213-4. . View Abstract
  • National Emphysema Foundation. .
  • Natural Standard: The Authority on Integrative Medicine. . Copyright © 2010.
  • Omron E. Inhaled corticosteroids and mortality in COPD. Chest. 2007 Mar;131(3):939; author reply 940. . View Abstract
  • Yohannes AM, Hardy CC. Treatment of chronic obstructive pulmonary disease in older patients: a practical guide. Drugs Aging. 2003;20(3):209-28. . View Abstract