Airway clearance in bronchiectasis: a randomized crossover trial of active cycle of breathing techniques versus Acapella.

Background: The efficacy of a new airway clearance device (Acapella) has not been previously investigated. Active cycle of breathing techniques (ACBT) is the standard airway clearance technique used in patients with bronchiectasis.

Objective: The objective of this study was to compare the efficacy of ACBT with Acapella as methods of airway clearance in adults with stable, productive bronchiectasis.