This is a phase 3 study. All bronchiectasis patients will be enrolled from 14 medical centers located in different geographic regions of mainland China. After a three-week screening period, On the basis of usual care [ambroxool (30mg thrice daily) or N-acetylcysteine (0.2g thrice daily) and chest physiotherapy (5 min, once daily)], eligible patients will be randomly allocated to treatment group (tobramycin nebulization, 300mg bid, delivered via an ultrasonic nebulizer) and control group (natural saline nebulization, 5ml bid, delivered via an ultrasonic nebulizer). A total of two 28-day on-and-off cycles will be scheduled. At the end of each on-and-off cycle, sputum culture and other clinical assessments will be performed.
This is a phase 3 study. Patients will be enrolled from 14 medical centers in mainland China. Eligible patients will be randomly allocated to treatment group (tobramycin nebulization, 300mg bid) and control group (natural saline nebulization, 5ml bid). A total of two 28-day on-and-off cycles will be scheduled. Both tobramycin solution and natural saline and the nebulizer will be solely provided by the sponsor.