Figure 3
Functional residual capacity (FRC) immediately following the sustained inflation (SI) (a), FRC during the subsequent positive pressure ventilation period (b), and the peak inspiratory pressure required to achieve a tidal volume of 10 ml/kg (c) in newborn rabbits delivered at 27, 29, or 30 d of gestational age (GA). 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; black) or the liquid was not replaced (control, gray).
