Figure 1From: Continuous positive airway pressure titration in infants with severe upper airway obstruction or bronchopulmonary dysplasiaEvolution of the oesophageal pressure (Poes) swing and the transdiaphragmatic pressure swing (Pdi) during spontaneous breathing (SB), a clinical setting of noninvasive continuous positive airway pressure (CPAP Clin), a physiological setting of noninvasive continuous positive airway pressure (CPAP Physio) and a physiological setting of noninvasive CPAP+1 cmH2O (CPAP Physio + 1). BPD: bronchopulmonary dysplasia, UAO: upper airway obstruction.Back to article page