A nurse is caring for a client who has a major burn injury and is receiving total parenteral nutrition. Which of the following laboratory tests is the priority for the nurse to use to confirm the client is receiving adequate nutrition?

Choice C reason: Flushing the tubing with water after each feeding is important to prevent clogging, maintain patency, and clear any residual formula from the tube. It also helps to prevent bacterial growth and infection.

Choice A reason: Wearing sterile gloves during a feeding is not necessary, as enteral feedings are not considered sterile procedures. Clean gloves are sufficient to prevent contamination and protect the nurse and the client.

Choice B reason: Chilling the feeding prior to administering is not recommended, as cold formula can cause abdominal cramping, discomfort, and diarrhea. The formula should be at room temperature or slightly warmed before giving it to the client.

Choice D reason: Positioning the client upright prior to a feeding is correct, but it is not enough. The client should remain upright for at least 30 minutes after the feeding as well, to prevent aspiration, reflux, and nausea.

Choice A reason: Abdominal distention is a possible complication of enteral nutrition, as it may indicate gas accumulation, constipation, or intolerance to the formula. However, it is not the greatest risk to the client, as it can be prevented or managed by adjusting the formula, rate, or volume of the feeding, or by administering medications or enemas.

Choice B reason: Fluid overload is a possible complication of enteral nutrition, as it may indicate excessive fluid intake, renal impairment, or heart failure. However, it is not the greatest risk to the client, as it can be prevented or managed by monitoring the fluid balance, electrolytes, and vital signs, or by administering diuretics or fluid restriction.

Choice C reason: Glycosuria is a possible complication of enteral nutrition, as it may indicate hyperglycemia, diabetes, or infection. However, it is not the greatest risk to the client, as it can be prevented or managed by monitoring the blood glucose, urine output, and signs of infection, or by administering insulin or antibiotics.

Choice D reason: Tube obstruction is the greatest risk to the client, as it may indicate clogging, kinking, or twisting of the tube, which can impair the delivery of the nutrition and medication, and cause aspiration, infection, or perforation. Tube obstruction can be prevented by flushing the tube with water before and after each feeding or medication, and by using a syringe or a pump to administer the formula. Tube obstruction can be managed by using warm water, carbonated beverages, or pancreatic enzymes to unclog the tube, or by replacing the tube if necessary.