Efficacy and safety of inhaled N-acetylcysteine in idiopathic pulmonary fibrosis: A prospective, single-arm study
2016
Abstract Background Idiopathic pulmonary fibrosis (IPF) is a progressive lung disease with few treatment options. The efficacy of N-acetylcysteine in patients with IPF remains controversial. The aim of this research was to investigate the efficacy of inhaled N-acetylcysteine. Methods This study was designed as a single-center, single-arm, prospective clinical trial. Each patient who had IPF received 352.4mg of inhaled N-acetylcysteine twice daily. Results In total, 28 patients were enrolled. The mean values of the respiratory function parameters at the initiation of therapy were as follows: forced vital capacity (FVC), 2.27L and %FVC, 76.2%. The mean change in FVC during 26 weeks prior to the inhaled N-acetylcysteine therapy was −170mL, a significant decrease ( p =0.019). The mean change in FVC during 26 weeks after the initiation of inhaled N-acetylcysteine therapy was −70mL ( p =0.06). When the patients were classified into two groups according to the degree of decline in FVC (≥100mL vs. Conclusions Inhaled N-acetylcysteine therapy was effective in patients with mild-to-moderate IPF and was more beneficial in patients who had greater declines in FVC before the initiation of therapy. (UMIN title: Efficacy and safety of inhaled N-acetylcysteine in idiopathic pulmonary fibrosis, UMIN000016706, 2015/03/04.)
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