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Randomized Controlled Trial
. 2021 Feb;56(2):509-515.
doi: 10.1002/ppul.25206. Epub 2020 Dec 23.

Effectiveness of hypertonic saline nebulization in airway clearance in children with non-cystic fibrosis bronchiectasis: A randomized control trial

Kodippilikande W D A Anuradha  1   2 , Paththini K Ganganath Gunathilaka  2 , Vithanage P Wickramasinghe  1   2
Affiliations
Randomized Controlled Trial

Effectiveness of hypertonic saline nebulization in airway clearance in children with non-cystic fibrosis bronchiectasis: A randomized control trial

Kodippilikande W D A Anuradha et al. Pediatr Pulmonol. 2021 Feb.

Abstract

Introduction: Failure to expectorate mucus resulting in progressive airway damage is the hallmark of bronchiectasis. Therefore effective airway clearance techniques (ACT) is the key step in its management. The aim of this study was to evaluate the efficacy of 3% hypertonic saline (HS) pre-medication in ACT in children with non cystic fibrosis (non-CF) bronchiectasis.

Methods: In this randomized crossover control trial five to 15 year old children, diagnosed with non-CF bronchiectasis were randomized either to receive 200 µg of inhaled salbutamol followed by HS nebulization (test) or only 200 µg of inhaled salbutamol, before chest physiotherapy which is the conventional ACT (controls) for 8 weeks. Inhaled salbutamol was administered via a pressurized metered dosed inhaler with a valved holding chamber. After completion of first phase both groups went through one month washout period, before being crossed over to the opposite arms in the second phase. Spirometric parameters and number of exacerbations were recorded at the end of phase I, washout period and phase II.

Results: Fifty two out of 63 enrolled completed the study. Baseline characteristics of the two groups were similar. A significantly higher mean improvement was seen in predicted forced expiratory volume in 1 s in the HS arm during phase 1 (HS = 14.15 ± 5.50 vs. conventional = 5.04 ± 5.55, p = .001) and phase II (HS = 10.81 ± 5.51 vs. conventional = 3.54 ± 5.13, p = .001) compared to conventional ACT arm. HS group showed a significantly higher mean improvement in predicted forced vital capacity in phase I (HS = 13.77 ± 5.73 vs. conventional = 7.54 ± 4.90, p = .001) and phase II, (HS = 9.42 ± 7.00 vs. conventional = 4.42 ± 4.00, p = .003). Mean number of exacerbations experienced by a single child during phase I (2 months) were significantly less (p = .001) in HS arm (0.42 ± 0.64) compared to that of conventional arm (1.30 ± 1.05) butthis difference was not significant in phase II (HS = 0.65 ± 0.74 and conventional = 1.03 ± 0.77, p = .074).

Conclusion: Incorporating HS nebulization into ACT is an effective strategy to improve dynamic lung volumes and morbidity in children with non-CF bronchiectasis.

Keywords: airway clearance; hypertonic saline; nebulization; non-CF bronchiectasis.

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References

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