The nurse is caring for a client who has a bowel obstruction and a new prescription for the insertion of a nasogastric tube. Which of the following interventions should the nurse take when inserting the nasogastric tube?

Choice A rationale Instructing the client to place the chin to the chest (flex the neck) and swallow during NG tube insertion facilitates the tube's passage into the esophagus instead of the trachea. This action closes the epiglottis over the glottis while opening the esophagus, leveraging the normal swallowing reflex to correctly direct the tube path, preventing serious respiratory complications like aspiration. Choice B rationale The accurate method for estimating the required tube length is to measure from the tip of the nose to the earlobe, and then down to the xiphoid process (or just below). Measuring to the umbilicus would significantly overestimate the required length, potentially causing the tube to coil in the stomach or enter the duodenum prematurely. Choice C rationale The optimal position for NG tube insertion is the high-Fowler's position (sitting upright at 60° to 90°). This position uses gravity to assist the tube's descent, promotes client comfort and cooperation, and significantly reduces the risk of aspiration should the client vomit or the tube accidentally enter the trachea, compared to the flat supine position. Choice D rationale A normal gag reflex often occurs when the tube passes the pharynx and is generally an indication that the tube is correctly progressing toward the esophagus, not the trachea. Temporarily pausing and instructing the client to breathe deeply and swallow can help manage the gagging; withdrawing the tube unnecessarily interrupts the procedure.