Figure 1
From: Differences in tidal breathing between infants with chronic lung diseases and healthy controls
Tidal breathing parameters used in this study of a) the volume and b)the flow signals and c) the flow-volume loop. Abbreviations: tI-inspiratory time, tE-expiratory time, VT-tidal volume, PTIF, PTEF-peak tidal inspiratory and expiratory flow, tPTEF-time to peak tidal expiratory flow, TIF 50-tidal inspiratory flow when 50% of VT is inspired, VPTEF exhaled volume to peak tidal expiratory flow, TEF75, TEF50, TEF25- expiratory flow when 75%, 50% and 25% of tidal volume remains in the lung.