A client is being treated for tumor lysis syndrome. Which nursing intervention should the nurse prioritize to minimize complications associated with this condition?

Tumor lysis syndrome (TLS) is an oncologic emergency that occurs when rapid destruction of malignant cells releases intracellular contents such as potassium, phosphate, and uric acid into the bloodstream. This leads to metabolic disturbances including hyperkalemia, hyperphosphatemia, hypocalcemia, and acute kidney injury due to uric acid crystal deposition in renal tubules. Prevention of renal failure through aggressive hydration is a key priority in management. Nursing care focuses on maintaining renal perfusion and promoting excretion of toxic metabolites. Rationale: A. Administering a bisphosphonate is not a primary intervention for tumor lysis syndrome. Bisphosphonates are mainly used to treat hypercalcemia associated with malignancy, not the metabolic disturbances seen in TLS. While calcium imbalances may occur, the primary concern in TLS is preventing renal failure through hydration and metabolic correction. B. Obtaining blood cultures is not relevant to tumor lysis syndrome because TLS is not an infectious process. It is a metabolic complication caused by rapid tumor cell breakdown following chemotherapy or radiation therapy. Blood cultures are indicated for suspected infection, not for metabolic emergencies like TLS. C. Encouraging fluid intake of 3 L daily is the priority intervention because it promotes renal perfusion and enhances excretion of uric acid, potassium, and phosphate. Adequate hydration helps prevent crystal precipitation in the renal tubules, reducing the risk of acute kidney injury. In some cases, intravenous fluids are also used to maintain high urine output as part of aggressive prophylaxis and treatment. D. Placing the client in a semi-Fowler’s position does not address the underlying metabolic and renal complications of tumor lysis syndrome. While positioning may support breathing comfort in some conditions, it has no effect on electrolyte imbalance or uric acid clearance. The priority remains fluid management and renal protection.