A 75-year-old, 5’5″ and 237 lb female patient is currently r…

A 75-year-old, 5’5″ and 237 lb female patient is currently receiving IPPB therapy.  Her set pressure is 15, flow rate 20  and sensitivity -1.  The respiratory therapist notes that the patient delivered Vt is 550 ml.  What adjustments should the respiratory therapist make?