A 6-week-old infant with pyloric stenosis is scheduled for a pyloromyotomy. Which pre-operative nursing action has the highest priority?

Choice C reason: pushing the undiluted Dextrose slowly through the currently infusing IV is the best way to administer the medication for a client with insulin shock. Insulin shock is a condition in which the blood glucose level drops too low due to excess insulin or insufficient food intake. This can cause symptoms such as confusion, sweating, tremors, or loss of consciousness. The nurse should administer 50% Dextrose IV as a bolus injection to raise the blood glucose level quickly and prevent brain damage.

Choice A reason: asking the pharmacist to add the Dextrose to a TPN solution is not appropriate for a client with insulin shock. TPN stands for total parenteral nutrition, which is a type of intravenous feeding that provides all the nutrients needed by the body. TPN solutions contain dextrose, amino acids, lipids, vitamins, minerals, and electrolytes in specific concentrations and ratios. Adding extra dextrose to a TPN solution can alter its composition and cause complications such as hyperglycemia or fluid overload.

Choice B reason: mixing the Dextrose in a 50 mL piggyback for a total volume of 100 mL is not effective for a client with insulin shock. A piggyback is a type of intravenous infusion that delivers medication through a secondary tubing attached to the primary tubing of another solution. Mixing the Dextrose in a piggyback can dilute its concentration and reduce its potency. It can also delay its delivery and onset of action.

Choice D reason: diluting the Dextrose in one liter of 0.9% Normal Saline solution is not safe for a client with insulin shock. Normal Saline is a type of intravenous fluid that contains sodium chloride in isotonic concentration. Diluting the Dextrose in one liter of Normal Saline can lower its concentration and increase its volume significantly. This can cause complications such as hypoglycemia or fluid overload.

Choice A reason: This is a correct answer because flushing the tube with more water is important to prevent clogging and maintain hydration. The novice should flush the tube with at least 15 mL of water before and after each medication, and between medications if more than one is given.

Choice B reason: This is a correct answer because administering each medication separately is important to prevent interactions and ensure accurate dosing. The novice should not mix different medications in one syringe or container, but give them one at a time, followed by water flushes.

Choice C reason: This is not a correct answer because adding the liquid volumes when documenting fluid intake is not necessary. The liquid medications do not count as fluid intake, but as medication administration. The novice should document the type, dose, route, and time of each medication given, as well as any adverse effects or complications.

Choice D reason: This is a correct answer because confirming that the novice determined the amount of gastric residual is important to assess tolerance and prevent aspiration. The novice should aspirate the gastric contents with a syringe before giving any medication or feeding, and measure and document the volume. If the volume is more than 100 mL or the prescribed amount, the novice should hold the medication or feeding and notify the healthcare provider.

Choice E reason: This is not a correct answer because advising the novice to use the plunger when giving medications is not recommended. The novice should use gravity to deliver the medications through the tube, by holding the syringe upright and allowing the liquid to flow slowly. Using the plunger can cause too much pressure and damage the tube or cause discomfort to the client.