Review 1 artificial ventilation 1 asthma 1 atelectasis 1 breathing pattern 1 breathing rate 1 bronchiectasis 1 bronchoscopy 1 chronic obstructive lung disease 1 collapse 1 comorbidity 1 coughing 1 daily life activity 1 disease surveillance 1 dyspnea 1 exercise 1 exertional dyspnea 1 expiratory flow 1 fibrosis 1 flow kinetics 1 functional residual capacity 1 human 1 hypertension 1 large airway collapse length of stay 1 lower respiratory tract infection 1 lung clearance 1 lung function 1 maximal inspiratory pressure 1 mouth breathing 1