• Heart Lung · Mar 2017

    Review Meta Analysis

    The effect of N-acetylcysteine on exacerbations of chronic obstructive pulmonary disease: A meta-analysis and systematic review.

    • Kaushal Fowdar, Huan Chen, Zhiyi He, Jiujin Zhang, Xiaoning Zhong, Jianquan Zhang, Meihua Li, and Jing Bai.
    • Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, PR China.
    • Heart Lung. 2017 Mar 1; 46 (2): 120-128.

    AbstractN-acetylcysteine (NAC) is an antioxidant and anti-inflammatory. Its effects on chronic obstructive pulmonary (COPD) outcomes, including exacerbation of and changes in lung function parameters, are controversial. To investigate the effects of NAC on COPD exacerbation and changes in lung function parameters in patients with COPD. A meta-analysis of randomized controlled trials retrieved from PubMed and Medline databases (12 trials; 2691 patients). High-dose [relative ratio (RR) = 0.90, 95% confidence interval (CI) = 0.82-0.996, P = 0.041] and low-dose (RR = 0.83, 95% CI = 0.69-0.99, P = 0.043) NAC reduced COPD exacerbation prevalence. Long-term (≥6 months), but not short-term, NAC reduced exacerbation prevalence (RR = 0.85, 95% CI = 0.74-0.98, P = 0.024). NAC did not affect exacerbation rate, forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), or inspiratory capacity (IC). Long-term NAC therapy may reduce risk of COPD exacerbation.Copyright © 2016 Elsevier Inc. All rights reserved.

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