Increase MV 12-18L/min (preemptively):
High RR (compared to Vt)
High I:E. Adv: reduced peak airway pressure for a given Vt, permits higher MV. (Improved oxygenation due to increased mean airway pressure.) Dis: reduced CO due to increased mean airway pressure, in obstructive airways can lead to gas trapping.
If oxygenation not a problem then reduce PEEP to increase MV for same peak airway pressure
Consider largest possible ETT.
Ask surgeons to deflate if necessary