Fig. 1.

Lung physiology after delivery and pressure-volume curves. CPAP, continuous positive airway pressure; V_T, tidal volume; Bud 1, budesonide 1 mg/kg; Bud 0.25, budesonide 0.25 mg/kg. A: peak inspiratory pressures (PIP) for animals at 30 min of mechanical ventilation. B: $P{a}_{CO}{}_{{}_2}$ values at 30 min. C: ventilation efficiency index (VEI) as calculated {VEI = [3800/(PIP·rate·$P{a}_{CO}{}_{{}_2}$)]} at 30 min. D: open chest pressure-volume inflation and deflation curves of post mortem lungs; n = 5–8 animals/group. *P < 0.05 vs. CPAP + Saline.