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Therapeutic communication involves actively listening and responding empathetically to the patient’s concerns. Asking the patient to elaborate on their fears (B) encourages them to express their emotions and fosters trust. Minimizing their feelings (A, C, D) or reassuring them too quickly can dismiss their emotional needs and limit effective communication.

Diuretics, particularly loop diuretics, commonly lead to potassium loss, resulting in hypokalemia. Monitoring potassium levels is critical to avoid complications such as arrhythmias. Hyperkalemia (A) is more commonly associated with potassium-sparing diuretics. Hyperglycemia (C) is a less common side effect, and hypotension (D) can occur but is typically less of a concern than electrolyte imbalances in heart failure patients on diuretics.

The symptoms described suggest diabetic ketoacidosis (DKA), a complication of diabetes that results from insulin deficiency. The fruity odor on the breath is due to acetone, a ketone body, and the rapid breathing (Kussmaul respirations) is a compensatory mechanism for metabolic acidosis. The most appropriate intervention is intravenous insulin to reduce blood glucose levels and stop ketogenesis. Administering glucose (B) or sodium bicarbonate (C) would worsen the acidosis, and fluids (D) are also necessary, but insulin is the primary intervention.

The nurse should always ask the patient about their cultural practices and preferences to ensure that care is respectful and tailored to the patient’s needs. Assuming family involvement (A) or ignoring cultural factors (B) may lead to misunderstandings or ineffective care. Providing care that aligns with the nurse’s beliefs (D) disregards the patient’s autonomy and cultural preferences.

The nurse should first inform the physician of the patient’s decision and document it to ensure the patient’s choice is recorded accurately in the medical record. While it may be appropriate to involve the family (B) or encourage reconsideration (C), the primary responsibility is to ensure the decision is documented and communicated with the physician.