Struggling to breathe, an older adult client with end-stage chronic obstructive pulmonary disease (COPD) is admitted through the emergency department. The client is anxious and considering mechanical ventilation when the spouse interrupts the nurse and hands the nurse a copy of the client’s living will. Which action is most important for the nurse to take?

Choice A reason: Going to the ER for glucose is unnecessary unless hypoglycemia or ketoacidosis is confirmed. Type 1 diabetes with nausea risks hyperglycemia from stress hormones like cortisol. Monitoring glucose and fluids manages the condition at home, preventing escalation unless severe symptoms arise, making this instruction premature.

Choice B reason: Drinking regular cola introduces high sugar, risking hyperglycemia in type 1 diabetes, where insulin deficiency impairs glucose uptake. Stress from illness elevates glucose via glucagon. Monitoring with non-sugar fluids prevents dehydration and ketoacidosis, making this advice dangerous and ineffective for diabetes management.

Choice C reason: Monitoring blood glucose and drinking fluids is critical in type 1 diabetes during illness. Nausea reduces intake, and stress hormones raise glucose, risking ketoacidosis. Frequent checks guide insulin adjustments, and fluids prevent dehydration, maintaining metabolic stability, addressing the physiological needs of insulin deficiency and infection.

Choice D reason: Avoiding insulin risks diabetic ketoacidosis, as type 1 diabetes requires basal insulin despite nausea. Illness increases glucose via stress hormones, even without food. Monitoring allows tailored dosing, preventing hyperglycemia, making this instruction harmful, as it ignores ongoing insulin needs for metabolic control.

Choice A reason: Excessive levothyroxine causes hyperthyroidism, increasing T3/T4, stimulating beta-adrenergic receptors, leading to palpitations (tachycardia) and shortness of breath from heightened cardiac workload and oxygen demand. These indicate overdose, risking atrial fibrillation, requiring immediate dose adjustment to prevent cardiovascular complications in this thyroid-treated client.

Choice B reason: Lethargy and lack of appetite suggest hypothyroidism, indicating low thyroid hormone levels from insufficient levothyroxine. These are opposite to overdose symptoms like palpitations, driven by excessive metabolism. High doses cause hyperthyroid effects, making this incorrect for identifying excessive dosing in goiter treatment.

Choice C reason: Muscle cramps and dry, flushed skin are not typical of levothyroxine overdose. Hyperthyroidism causes warm, moist skin from increased metabolism, not dryness. Cramps relate to electrolytes. Palpitations and shortness of breath are hallmark overdose signs, reflecting thyroid-driven cardiovascular overstimulation, making this less accurate.

Choice D reason: Bradycardia and constipation indicate hypothyroidism from low thyroid hormones, reducing heart rate and metabolism. This suggests inadequate levothyroxine, not overdose. Excessive doses cause hyperthyroidism, with palpitations and dyspnea from metabolic hyperactivity, making these symptoms incorrect for high-dose levothyroxine effects.