Table 1.

Changes of respiratory index in surfactant-depleted lung injury rabbits ventilated with CMV or HFO

Mode of	Before first LL	15 min after LL	4 h after LL
ventilation
CMV	450.5 ± 25.2	91.8 ± 21.1*	32.3 ± 6.7†‡
HFO	430.3 ± 15.2	104.0 ± 13.1*	55.8 ± 4.3†

After the completion of surfactant depletion, the rabbits were ventilated by conventional mechanical ventilation (CMV) or by high-frequency oscillatory ventilation (HFO) for 4 h at the same mean airway pressure. LL = lung lavage. ^*P < 0.05 vs the value before the first LL; ^†P < 0.05 vs the value before and 15 min after the first LL; ^‡P < 0.05 vs the values of HFO at 4 h after the first LL.