What is the single most important component in the management of COPD?

• A. O2 supplementation
• B. Smoking cessation
• C. Treating any respiratory infections
• D. Improving FEV1/FVC ratio

Answer: (B)

Smoking cessation is the most important step in managing COPD because ongoing tobacco use accelerates lung function decline, increases the frequency and severity of exacerbations, and worsens overall survival. Quitting slows the rate of FEV1 decline, reduces hospitalizations, and improves symptoms and quality of life, making other therapies more effective. While oxygen therapy is crucial for those with significant hypoxemia, and treating infections and optimizing bronchodilator therapy are essential parts of care, nothing influences prognosis as much as stopping smoking. If the patient quits, they gain the greatest long-term benefit in slowing disease progression and reducing mortality.