Vent Settings (asthma/COPD)
Mode Volume assist control
Tidal volume 8 mL/kg predicted body weight (This setting should not need to be titrated.)
Inspiratory flow rate
60–80 L/min
Respiratory rate Start at 8-10 breaths/min; adjust to allow full expiration
PEEP 0 cm H2O (some may use PEEP ≤5 cm H2O)
Start at 40%; adjust for SpO2 ≥ 88%

Titrate respiratory rate to avoid auto-PEEP
ARDS Settings

Reference:  Weingart SD. Managing Initial Mechanical Ventilation in the Emergency Department Annals of EM epub, June 8, 2016.