A 18-year-old girl weighing 40 kg (88 lb) is receiving conti…

A 18-year-old girl weighing 40 kg (88 lb) is receiving continuous mechanical ventilation following an accidental drug overdose. The respiratory therapist notes the following:     Mode: VC, SIMV     Set rate: 15 br/min.     Total rate: 15 br/min.     VT: 500 mL     FIO2: 0.30 Arterial blood gases are as follows:     pH: 7.58     PCO2: 23 torr     PO2: 141 torr     HCO3-: 22 mEq/L The therapist should