Objectives: The objective is (1) To evaluate the change in forced expiratory volume in one second (FEV), forced vital capacity (FVC), dyspnea grading, body mass index, and oxygen saturation (SpO) in adults with postinfectious obliterative bronchiolitis (PIOB) over a period of time (2) To evaluate the same parameters in chronic obstructive pulmonary disease (COPD) patients and compare with PIOB.
Materials And Methods: It was a retrospective observational study involving appropriately managed patients of PIOB and COPD with minimum 3 years of follow-up. Out of a total of 106 patients who followed up from January 2019 to December 2019 and had a follow-up data of more than 3 years, 61 (31 COPD and 30 PIOB) patients were included in the final analysis after applying the inclusion and exclusion criteria.