Figure 5
Percentage increase in airway diameters of the trachea (a,b) and the left (c,d) and right (e,f) bronchi that were caused by positive pressure inflations in newborn rabbits delivered at 27, 29, or 30 d of gestational age (GA). Values were measured immediately after the sustained inflation (post-SI), during the middle phase (mid-vent) and at the end (end vent) of the subsequent ventilation period. At each GA, airway liquid was gently aspirated and either a set volume of liquid (30 ml/kg) was returned to the lung (liquid added; a,c,e) or the liquid was not replaced (control, b,d,f).
