31 August
★ Chronic Obstructive Pulmonary Disease (COPD) is associated with two diseases: Chronic Bronchitis: Hall mark sign- productive cough. Emphysema: Structural change of the lungs. ★ Chronic Obstructive Pulmonary Disease (COPD) আসলে কি তা আগে দেখে নেই, Chronic Obstructive Pulmonary Disease (COPD) is characterized by irreversible airflow limitation due to some…