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Background: Although pulmonary fibrosis secondary to COVID-19 infection is uncommon, it can lead to problems if not treated effectively in the early period. This study aimed to compare the effects of treatment with nintedanib and pirfenidone in patients with COVID-19-related fibrosis., Methods: Thirty patients who presented to the post-COVID outpatient clinic between May 2021 and April 2022 with a history of COVID-19 pneumonia and exhibited persistent cough, dyspnea, exertional dyspnea, and low oxygen saturation at least 12 weeks after diagnosis were included. The patients were randomized to receive off-label treatment with nintedanib or pirfenidone and were followed up for 12 weeks., Results: After 12 weeks of treatment, all pulmonary function test (PFT) parameters, 6MWT distance, and oxygen saturation were increased compared to baseline in both the pirfenidone group and nintedanib groups, while heart rate and radiological score levels were decreased ( p  < 0.05 for all). The changes in 6MWT distance and oxygen saturation were significantly greater in the nintedanib group than in the pirfenidone group ( p  = 0.02 and 0.005, respectively). Adverse drug effects were more frequent with nintedanib than pirfenidone, with the most common being diarrhea, nausea, and vomiting., Conclusion: In patients with interstitial fibrosis after COVID-19 pneumonia, both nintedanib and pirfenidone were observed to be effective in improving radiological score and PFT parameters. Nintedanib was more effective than pirfenidone in increasing exercise capacity and saturation values but caused more adverse drug effects., (© 2023 Elsevier España, S.L.U. All rights reserved.)

Background: Although pulmonary fibrosis secondary to COVID-19 infection is uncommon, it can lead to problems if not treated effectively in the early period. This study aimed to compare the effects of treatment with nintedanib and pirfenidone in patients with COVID-19-related fibrosis., Methods: Thirty patients who presented to the post-COVID outpatient clinic between May 2021 and April 2022 with a history of COVID-19 pneumonia and exhibited persistent cough, dyspnea, exertional dyspnea, and low oxygen saturation at least 12 weeks after diagnosis were included. The patients were randomized to receive off-label treatment with nintedanib or pirfenidone and were followed up for 12 weeks., Results: After 12 weeks of treatment, all pulmonary function test (PFT) parameters, 6MWT distance, and oxygen saturation were increased compared to baseline in both the pirfenidone group and nintedanib groups, while heart rate and radiological score levels were decreased (p<0.05 for all). The changes in 6MWT distance and oxygen saturation were significantly greater in the nintedanib group than in the pirfenidone group (p=0.02 and 0.005, respectively). Adverse drug effects were more frequent with nintedanib than pirfenidone, with the most common being diarrhea, nausea, and vomiting., Conclusion: In patients with interstitial fibrosis after COVID-19 pneumonia, both nintedanib and pirfenidone were observed to be effective in improving radiological score and PFT parameters. Nintedanib was more effective than pirfenidone in increasing exercise capacity and saturation values but caused more adverse drug effects., (Copyright © 2023 Elsevier España, S.L.U. All rights reserved.)