Most acute wheezing episodes in preschool children lead to airway dehydration. Together with other factors, airway dehydration causes the body to have trouble clearing mucus. These children do not respond well to available treatments. A new study published in the journal Pediatrics evaluated the effect of administering inhaled hypertonic saline to wheezing preschool children, which promotes airway hydration and thus mucus clearance [1].

photo credit: MinivanNinja