A client had a subtotal thyroidectomy in the early morning. During evening rounds, the nurse assesses the client who now has nausea, a temperature of 105 degrees F (40.6 C), tachycardia, and extreme restlessness. What is the most likely cause of these signs and symptoms?

Choice A rationale: Administering half the dose of an oral antidiabetic medication without food can still cause hypoglycemia. The patient is NPO, meaning their body is not receiving any glucose from food intake. Oral antidiabetic drugs lower blood glucose. Even a reduced dose could precipitate a hypoglycemic episode, which is particularly dangerous in a hospitalized patient undergoing a procedure.
Choice B rationale: Withholding all medications as ordered is not always the correct action without a specific order. While withholding the medication is likely the correct course of action for an NPO patient, a nurse should always follow a prescriber's explicit orders. A nurse should not withhold medications independently, especially when the patient is on a scheduled medication regimen, as this could lead to unintended consequences.
Choice C rationale: The nurse should contact the prescriber for orders to clarify the patient's medication regimen. Patients who are NPO should not take oral medications that can cause hypoglycemia without a food source. Therefore, a new order is needed to either withhold the medication or adjust the dose based on the patient's fasting status and blood glucose levels, ensuring patient safety.
Choice D rationale: Giving the medication with a sip of water is dangerous because it provides no nutritional support to counteract the medication's glucose-lowering effects. Since the patient is NPO, they are not consuming food, and the medication could cause a severe hypoglycemic event. Additionally, taking anything by mouth may violate the NPO status required for the endoscopy, compromising the procedure.

Choice A rationale: Encouraging incentive spirometry is a pulmonary intervention designed to prevent atelectasis and pneumonia by promoting deep breathing. While important post-surgically, it does not address the metabolic emergency indicated by the fruity breath odor, which is a classic sign of excessive ketone production from fat metabolism due to severe insulin deficiency.
Choice B rationale: Increasing intravenous fluids could worsen fluid overload in a dehydrated client without addressing the underlying metabolic imbalance. Although fluid resuscitation is part of the treatment for severe hyperglycemia, the primary intervention involves insulin administration to correct the metabolic derangement and halt ketone production, which is the root cause of the fruity odor.
Choice C rationale: The fruity breath odor is caused by the exhalation of acetone, a type of ketone body produced during lipolysis when glucose is unavailable for cellular energy. This indicates the body is in a state of ketoacidosis, a life-threatening complication of uncontrolled diabetes. Consulting the provider for immediate testing and treatment is the priority action.
Choice D rationale: Performing meticulous pulmonary hygiene, such as suctioning and chest physiotherapy, is indicated for clients with respiratory secretions or compromised lung function. While important for general post-operative care, it does not address the specific metabolic emergency of ketoacidosis indicated by the fruity breath odor, which requires immediate medical intervention.