A patient with chronic kidney disease (CKD) is admitted with fatigue, peripheral edema, and elevated blood pressure that is difficult to control with antihypertensives. Laboratory results show elevated blood urea nitrogen (BUN), creatinine, and hyperkalemia. Which nursing intervention should be prioritized to address the patient's current condition?

Choice D rationale The patient is exhibiting signs of acute fluid volume excess and life-threatening hyperkalemia. Loop diuretics help promote the excretion of excess water and sodium, reducing blood pressure and pulmonary or peripheral congestion. Monitoring potassium is critical because hyperkalemia can lead to cardiac dysrhythmias. Normal potassium is 3.5 to 5.0 mEq/L. In renal failure, the inability to excrete potassium makes this a high priority intervention to stabilize the patient's cardiac rhythm and hemodynamic status. Choice A rationale While fatigue in chronic kidney disease is often due to low hemoglobin, administering minerals without checking current levels is dangerous. Patients with renal failure can have issues with mineral metabolism and iron overload if not monitored. The immediate priority must be addressing the fluid overload and high potassium, which are more acutely life-threatening than chronic anemia. Iron levels and hemoglobin, normally 12 to 16 g/dL in females, should be assessed prior to therapy. Choice B rationale Long term management of kidney disease involves protein modification to reduce the accumulation of nitrogenous wastes like urea. However, making drastic dietary changes without professional guidance or considering the patient's nutritional status is not the immediate priority during an acute admission for fluid overload. The focus must be on pharmacological and fluid interventions. BUN levels, normally 7 to 20 mg/dL, are elevated in these patients, but dietary changes take time to show effects. Choice C rationale In a patient already experiencing peripheral edema, hypertension, and fluid overload, increasing fluid intake is contraindicated. The kidneys are unable to process the current volume, and adding more fluid will worsen the systemic congestion, potentially leading to heart failure or pulmonary edema. Fluid restriction is usually necessary when the glomerular filtration rate is significantly diminished. Encouraging more water would be harmful and reflects a misunderstanding of the pathophysiology of advanced renal disease.