Table 3.

Ventilator and Length of Stay Data.

Ventilator parameter	Average settings (range)
Maximum FIO2	89% (60%-100%)
Maximum PEEP	12 (5-16 cm H2O)
FIO2 at time of tracheostomy	40% (30%-60%)
PEEP at time of tracheostomy	5.7 (5-10 cm H2O)
Tracheostomy intervals	Average days (range)
Admission to tracheostomy	22.6 (15-31)
Intubation to tracheostomy	18.6 (14-28)
Tracheostomy to liberation (survivors)	9 (2-20)
Tracheostomy to discharge (survivors)	20.9 (13-45)

Abbreviations: FIO2, fraction inspired oxygen; PEEP, positive end-expiratory pressure.