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RESEARCH PAPER
The efficacy and safety of inhaled acetylcysteine in comparison with oral acetylcysteine in chronic obstructive pulmonary disease: A randomized single-center study
1
Bogomolets National Medical University, Kyiv, Ukraine
2
National Institute of Phthisiology and Pulmonology named after F. G. Yanovsky, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
Submission date: 2020-02-03
Final revision date: 2020-04-10
Acceptance date: 2020-04-11
Online publication date: 2020-08-06
Corresponding author
Nina Kuzmenko
Bogomolets National Medical University, Department of Internal Medicine No 3, 26, P. Zaporozhtsa street, Kyiv, Ukraine. Tel.: +380936167200.
Bogomolets National Medical University, Department of Internal Medicine No 3, 26, P. Zaporozhtsa street, Kyiv, Ukraine. Tel.: +380936167200.
Pol. Ann. Med. 2020;27(2):108-114
KEYWORDS
TOPICS
ABSTRACT
Introduction:
One-third of all the patients with chronic obstructive pulmonary disease (COPD) additionally take mucolytics as per GOLD recommendation due to complaints of productive cough despite their compliance with the basic treatment regimen.
Aim:
To assess the efficacy and safety of inhaled N-acetylcysteine (NAC) in comparison with oral NAC in patients with COPD.
Material and methods:
The study included 46 patients with stable COPD and difficult expectoration of sputum who were divided into two groups. The first group (n = 22) took 600 mg/day NAC orally, and the second one (n = 24) inhaled 600 mg/day NAC by a nebulizer for 10 days. In the beginning and after the 10-day treatment the questionnaires (CAT, mMRC, CCQ, SGRQ, SF-36), 6-minute walk distance test and day and night cough symptoms were evaluated, spirometry and sputum analysis were performed.
Results and discussion:
In the first group, CCQ showed improvement in the status of patients (by 9.7%). The severity of night cough also decreased. Other indices were not changed statistically. In the other group, positive changes in the CAT (by 13.1%) and SF-36 were reported, night cough decreased. Additionally, forced expiratory volume in 1 s (FEV1) values increased (by 10.3%). No changes in FEV1 2 hours after the first oral usage or inhalation of NAC were found.
Conclusions:
Both oral administration and inhalation of NAC by a nebulizer for 10 days has a similar positive effect on the manifestations of COPD, but the inhalation route of the drug is also accompanied by improved quality of life and lung function test (FEV1) as well.
One-third of all the patients with chronic obstructive pulmonary disease (COPD) additionally take mucolytics as per GOLD recommendation due to complaints of productive cough despite their compliance with the basic treatment regimen.
Aim:
To assess the efficacy and safety of inhaled N-acetylcysteine (NAC) in comparison with oral NAC in patients with COPD.
Material and methods:
The study included 46 patients with stable COPD and difficult expectoration of sputum who were divided into two groups. The first group (n = 22) took 600 mg/day NAC orally, and the second one (n = 24) inhaled 600 mg/day NAC by a nebulizer for 10 days. In the beginning and after the 10-day treatment the questionnaires (CAT, mMRC, CCQ, SGRQ, SF-36), 6-minute walk distance test and day and night cough symptoms were evaluated, spirometry and sputum analysis were performed.
Results and discussion:
In the first group, CCQ showed improvement in the status of patients (by 9.7%). The severity of night cough also decreased. Other indices were not changed statistically. In the other group, positive changes in the CAT (by 13.1%) and SF-36 were reported, night cough decreased. Additionally, forced expiratory volume in 1 s (FEV1) values increased (by 10.3%). No changes in FEV1 2 hours after the first oral usage or inhalation of NAC were found.
Conclusions:
Both oral administration and inhalation of NAC by a nebulizer for 10 days has a similar positive effect on the manifestations of COPD, but the inhalation route of the drug is also accompanied by improved quality of life and lung function test (FEV1) as well.
ACKNOWLEDGEMENTS
We thank Dmytro Fedkov and Liubov Petelytska for comments that greatly improved the manuscript.
FUNDING
None declared.
CONFLICT OF INTEREST
None declared.
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