The development of (top to bottom) of tidal volume (V
), breathing frequency (f), minute ventilation (V
), and the ratio of breathing frequency and tidal volume (f/V
) during pressure support of 10 above 5 cm H
O of PEEP (PSV
) and throughout the spontaneous breathing trial (SBT) on CPAP of 5 cm H
O. See Figure 2 for more description.