Hypertonic Saline in Non-CF Bronchiectasis

The purpose of this research study is to evaluate the effects of 7% hypertonic saline (HS) delivered by nebulizer on mucociliary clearance (MCC) - a test that shows the rate at which a person's lungs can clear inhaled particles. We will compare the rate of MCC at baseline (before treatment with HS), with MCC after a single dose of HS (acute treatment), and with MCC after two weeks of treatment with HS twice a day after 12 hours from the last dose of HS (sustained effect). We will also assess response to HS with other outcomes (lung function testing, changes in phlegm/mucus, and survey responses). If we find there is a sustained effect of HS, this would support the use of HS as part of airway clearance for people with bronchiectasis.