What is COPD?
 

Chronic Obstructive Pulmonary Disease (COPD) is a progressive inflammatory lung disease that obstructs airflow into the lungs, making it increasingly difficult to breathe. It is an umbrella term that primarily includes two main conditions:
 

• Chronic Bronchitis: Long-term inflammation of the bronchial tubes that results in daily cough and excessive mucus production.

• Emphysema: Destruction of the delicate walls of the air sacs (alveoli) at the very ends of the smallest airways, reducing the lungs' ability to exchange oxygen and carbon dioxide and causing air to become trapped.

Common Causes & Risk Factors
 

Unlike asthma, which often has strong allergic or genetic roots early in life, COPD is typically a cumulative disease linked to long-term exposure to airway irritants:
 

• Tobacco smoke, including secondhand smoke

• Long-term exposure to occupational dusts, chemical fumes, manufacturing vapors, or indoor air pollution

• Alpha-1 Antitrypsin (AAT) Deficiency, a rare genetic disorder, which causes low levels of a protective liver protein, leading to early-onset emphysema even in non-smokers.

• Advanced age

Common Symptoms
 

• Chronic Productive Cough: A daily cough that produces thick mucus (sputum), often worse in the morning.

• Progressive Shortness of Breath (Dyspnea)

• Wheezing & Chest Tightness

• Frequent Respiratory Infections

• Advanced Signs: Unexplained weight loss, lack of energy, and in advanced stages, swelling in the ankles, feet, or legs (peripheral edema) due to heart strain.

Diagnostics
 

• Spirometry (Pulmonary Function Testing): The essential gold standard test. It measures the volume of air you can exhale and the speed of expiration. A reduced ratio of air exhaled in the first second compared to total capacity that does not fully normalize with a bronchodilator confirms irreversible airflow obstruction.

• Chest X-Ray or CT Scan: Imaging to visualize lung structure, rule out other conditions (like pneumonia or heart failure), and check for signs of hyperinflation or emphysema.

• Alpha-1 Antitrypsin Blood Test

Management Strategies
 

• Eliminating Irritants & Lifestyle Measures:

  • Smoking Cessation: The single most impactful intervention to halt further loss of lung function.

  • Avoiding occupational dusts, chemical fumes, and air pollution, and staying up-to-date on routine vaccinations (such as influenza, pneumococcal, COVID-19, and RSV vaccines) to prevent dangerous lung infections.

• Pulmonary Rehabilitation:

  • A structured medical program combining tailored exercise training, nutritional counseling, breathing techniques (like pursed-lip breathing), and education to help patients breathe easier and stay active.

• Inhaled Medications (Bronchodilators & Anti-Inflammatories):

  • Long-Acting Muscarinic Antagonists (LAMAs) & Long-Acting Beta-Agonists (LABAs): Daily maintenance inhalers that relax and keep the airways open.

  • Inhaled Corticosteroids (ICS): Often added to long-acting bronchodilators for patients with high blood eosinophil counts to reduce airway inflammation.

  • Short-Acting Rescue Inhalers: Used for quick relief during sudden worsening of breathlessness.

• Oxygen Therapy

  • Supplemental Oxygen: Prescribed for patients with persistently low blood oxygen levels to improve survival, heart function, and exercise capacity.