The nurse is caring for a client scheduled for an esophagogastroduodenoscopy (EGD). Which nursing intervention should be included in the client's plan of care?

Esophagogastroduodenoscopy is an invasive procedure involving the insertion of a lighted endoscope to visualize the upper digestive tract. The oropharynx is typically numbed with a topical anesthetic to suppress the gag reflex and facilitate tube passage. Post-procedural safety focuses on preventing aspiration pneumonia due to impaired swallowing. A. Withhold all medications the night before the exam: Most essential medications, especially for cardiac or blood pressure control, should be taken with a small sip of water. Only medications that increase bleeding risk, like anticoagulants, or interfere with visualization are typically held. Complete cessation is rarely required. B. Allow the client to smoke just prior to testing to decrease anxiety: Nicotine stimulates the production of gastric juices and increases the rate of gastrointestinal contractions. This can lead to excessive secretions during the procedure, obscuring the physician's view and increasing the risk of aspiration. C. Allow the client to drink fluids up to 2 hours before the examination: The client must remain strictly NPO for at least 6 to 8 hours to ensure the stomach is completely empty. Even clear liquids can be regurgitated and aspirated while the client is sedated during the endoscopy. D. Maintain NPO status until the gag reflex returns post-procedure: The topical anesthetic used on the throat temporarily paralyzes the muscles responsible for airway protection. Food or fluids administered before the gag reflex returns can enter the trachea instead of the esophagus. This is a critical safety priority.