Figure 2

Compliance, ventilation efficiency index, and oxygenation. Lambs with Sat PC < 5 μmol/kg had decreased dynamic compliance values for the last hour of ventilation. Ventilation efficiency index decreased and oxygenation index increased in lambs with Sat PC < 5 μmol/kg, indicating decreased gas exchange over time. Oxygenation index at 2 h was measured on an FiO₂ of 1.0. Compliance = V_T /pressure, Ventilation Efficiency Index = 3800/(PIP•rate•PaCO₂). Oxgenation index = (FiO₂•Mean Airway pressure)/PaO_2. ● Sat PC > 5 μmol/kg ■ Sat PC < 5 μmol/kg * p < 0.05 vs Sat PC < 5 μmol/kg.