A nurse is caring for a client who has a vented NG tube set to low intermittent suction and has vomited. Which of the following actions should the nurse perform first?

A. Administering an antiemetic may help with nausea but does not address the cause of vomiting in this situation. B. Vomiting in a client with an NG tube on suction suggests that the tube may be clogged or malfunctioning, leading to inadequate gastric decompression. The nurse should first check the function of the suction device and ensure the NG tube is patent. C. Replacing the NG tube is not the first action. The nurse should first assess and troubleshoot before considering replacement. D. Providing oral hygiene is important but not the priority when the client is actively vomiting.