Kalapala, K. ., Saluja, M. ., & Khan, R. . (2026). A Study of Functional Changes of the Right Heart in Patients of COPD Acute Exacerbation with Respiratory Failure. UAPM Journal of Respiratory Diseases and Allied Sciences, 3(01), 12-16. https://doi.org/10.70192/v3.i1.03