A nurse is planning care for a client who has a prescription for continuous enteral feedings through an NG tube. Which of the following actions should the nurse plan to take?

Measure gastric residual volumes every 4 hr.

Flush the NG tube with 30 mL 0.9% sodium chloride before and after medication.

Advance the rate of the feeding every 2 hr.

Maintain the head of the bed at a 20" angle.