Table 1

Inclusion and exclusion criteria

Inclusion criteriaExclusion criteria
Aged 1–10 yearsDiagnosis of bronchiectasis, cystic fibrosis or immunodeficiency
Have a clinical diagnosis of PBBFB-BAL being performed for a therapeutic indication (ie, lobar collapse) rather than for lower airway
Referred for a clinically indicated FB-BALNon-English speaker where translation facilities are insufficient to guarantee informed consent
Parent/guardian willing and able to give fully informed consentIs taking part in another interventional study
Willing and able to comply with the study procedures
  • BAL, bronchoalveolar lavage; FB, flexible bronchoscopy; PBB, protracted bacterial bronchitis.