Chronic Obstructive Pulmonary Disease
About COPD
- Definition: COPD is a group of lung diseases that cause airflow blockage and breathing-related problems. The two main types are chronic bronchitis (inflammation of airways) and emphysema (damage to air sacs in the lungs).
- Global impact: It is the fourth leading cause of death worldwide, responsible for 3.5 million deaths in 2021.
- Progression: COPD worsens over time, but early diagnosis and treatment can slow progression.
Causes and Risk Factors
- Smoking: The leading cause, accounting for over 70% of cases in high-income countries.
- Air pollution: Household air pollution (from biomass fuels) is a major risk factor in low- and middle-income countries.
- Occupational exposure: Long-term exposure to dust, fumes, or chemicals.
- Genetics: Rarely, conditions like alpha-1 antitrypsin deficiency can predispose individuals to COPD.
Symptoms
- Persistent cough with mucus
- Shortness of breath, especially during physical activity
- Wheezing (whistling sound while breathing)
- Chest tightness
- Frequent respiratory infections
Diagnosis
- Spirometry test: Measures airflow and lung function.
- Chest X-ray or CT scan: Helps detect emphysema and rule out other conditions.
- Blood tests: May check oxygen levels or genetic risk factors.
Treatment and Management
- Lifestyle changes: Quitting smoking is the most important step.
- Medications: Bronchodilators, inhaled steroids, and combination inhalers.
- Pulmonary rehabilitation: Exercise, nutrition, and breathing techniques.
- Oxygen therapy: For advanced cases with low oxygen levels.
- Surgery: In severe cases, lung volume reduction or transplant.
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