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Objectives:The purpose of this study was to compare the efficacy of the test of incremental respiratory endurance (TIRE) with active cycle of breathing techniques (ACBT) [incorporating postural drainage (PD) and vibration] as methods of airway clearance in adults with bronchiectasis. Design:A randomized crossover study in which a single session of ACBT (incorporating PD and vibration) was compared to a single session of TIRE was carried out in 20 patients (14 female) with stable, productive bronchiectasis. Measurements:Weight of sputum (treatment plus 30 min) was the primary outcome measure recorded. Pre and post-treatment measures of lung function and SpO 2  were also recorded. Results:All 20 patients were stable during the study period. Sputum weight expectorated during and 30 min post-ACBT (incorporating PD and vibration) treatment was significantly greater than the sputum weight expectorated during and 30 min post-TIRE treatment [mean difference 2.44 g (95% CI 0.43-4.45)]. Conclusion:ACBT (incorporating PD and vibration) is a more effective method of airway clearance in bronchiectasis than TIRE during single treatment sessions.

chronic respiratory disease

Airway clearance in bronchiectasis: a randomized crossover trial of active cycle of breathing techniques (incorporating postural drainage and vibration) versus test of incremental respiratory endurance