A nurse is preparing to administer intermittent tube feeding to a client who has a percutaneous gastrostomy tube. Which of the following actions should the nurse take?

A. Flush the client's tube with 5 mL of water. – This is incorrect because the standard amount of water used to flush a feeding tube is typically 30–50 mL to maintain patency and prevent clogging. B. Place the client in a supine position. – This is incorrect because the client should be placed in a semi-Fowler’s or Fowler’s position (at least 30–45 degrees) to reduce the risk of aspiration. C. Check the pH level of the client's gastric contents. – This is the correct answer. Checking the pH of gastric contents (typically ≤5.5) helps confirm proper tube placement before administering feedings, reducing the risk of aspiration. D. Check the patency of the client's tube every 8 hr. – This is incorrect because tube patency should be checked before each feeding or medication administration, not just every 8 hours.