A Quasi-Experimental Study to Assess the Effectiveness of Deep Breathing Exercise among Patients with Chronic Obstructive Pulmonary Disease in Apollo Loga Hospital Karur

Chronic Obstructive Pulmonary Disease (COPD) is a progressive condition characterized by airflow limitation that is not fully reversible. It presents a major burden to individuals and healthcare systems globally. Patients often experience chronic breathlessness, reduced exercise tolerance, and recurrent hospitalizations (WHO, 2023). Although pharmacologic therapies are essential in COPD management, non-pharmacologic interventions, such as breathing retraining, have shown promise in reducing dyspnea and improving quality of life