Background:Chronic Obstructive Pulmonary Disease (COPD) is a lung disorder characierized byimpaired lung function in the form of a prolonged expiratory period due to airway narrowing, whichsmoking habits, air pollution, and infections. Decreased oxygen saturation occurs due to lung tissuedamage, airway constriction, and an imbalance in the ventilation and perfusion ratio,which disruptsoxygen di…