Daily Observations of Nebuliser Use and Technique (DONUT) in children with cystic fibrosis.

Background: Cystic fibrosis (CF) caregivers focus on correct inhalation technique for nebulisers as this is essential to optimize efficacy of inhaled drugs. However, little is known on this nebuliser technique of patients at home.

Methods: Three "hidden" video registrations were made of 32 children with CF (6-18years) nebulising at home.