A client with leukemia develops hyperphosphatemia, hyperkalemia, hypocalcemia, and hyperuricemia. Which of the following is the most appropriate initial intervention?

1. A

   Restrict oral fluids

2. B

   Aggressive IV hydration therapy

3. C

   IV calcium gluconate

4. D

   Oral potassium supplemen

Appeared in: AIIMS M.Sc. Nsg Entrance exam-2026

Explanation

• The client's signs and symptoms are classic for Tumor Lysis Syndrome (TLS), an oncologic emergency.
• The initial and most critical intervention for TLS is aggressive IV hydration.
• Hydration is vital to flush out excess electrolytes (potassium, phosphate) and uric acid, thereby preventing precipitation in the renal tubules and subsequent acute kidney injury.
• Increasing urine output through hydration is the primary mechanism to manage the metabolic derangements and protect the kidneys.

Why Other Options Were Wrong

• Option A: Restricting fluids is contraindicated as it would lead to dehydration, concentrating the toxic metabolites and increasing the risk of acute kidney injury.
• Option C: IV calcium gluconate is a treatment for the complications of TLS (symptomatic hypocalcemia or cardiotoxicity from hyperkalemia), not the initial, primary intervention to manage the underlying cause.
• Option D: Administering potassium is extremely dangerous as the client already has hyperkalemia. This would worsen the condition and could precipitate a fatal cardiac event.

Related Visual

• Visual 1: Flowchart - Management of Tumor Lysis Syndrome. This would outline the steps from risk assessment to initial interventions (hydration, allopurinol/rasburicase) and management of specific electrolyte abnormalities.
• Visual 2: Diagram - Pathophysiology of TLS. This would show a cancer cell breaking down and releasing potassium, phosphate, and nucleic acids (which become uric acid), leading to the characteristic metabolic imbalances.

Clinical Relevance

• Nursing practice connection: Use the key finding related to Management of Tumor Lysis Syndrome (TLS) to guide bedside assessment, documentation, and the next nursing action.
• Nurses must be able to recognize the signs of TLS, as it is a life-threatening emergency requiring immediate action.
• The nurse's role includes initiating aggressive hydration, meticulous monitoring of intake/output, continuous cardiac monitoring, and frequent assessment for signs of electrolyte imbalances (e.g., muscle cramps, paresthesias, ECG changes).
• Prompt reporting of laboratory abnormalities and clinical changes to the provider is critical for timely management and prevention of irreversible organ damage, particularly renal failure.

How to Approach the Question

• First, analyze the patient's clinical data. The patient has leukemia and a specific set of lab abnormalities: high potassium, high phosphate, low calcium, and high uric acid.
• Recognize this pattern as the classic presentation of Tumor Lysis Syndrome (TLS).
• Recall that TLS is an oncologic emergency where the primary goal is to prevent acute kidney injury.
• Evaluate the interventions based on the pathophysiology of TLS. The core problem is the accumulation of toxic intracellular contents in the blood.
• The most logical initial step is to enhance the body's ability to excrete these substances. Aggressive IV hydration achieves this by increasing renal clearance.
• Eliminate the other options: restricting fluids is harmful, calcium is a secondary treatment for complications, and giving potassium is contraindicated.

Concept Tested & Keywords

• Concept Tested: Management of Tumor Lysis Syndrome (TLS)
• Stem keywords: leukemia, hyperphosphatemia, hyperkalemia, hypocalcemia, hyperuricemia, initial intervention
• Lead-in keywords: most appropriate, initial
• Clinical cues: The combination of hyperkalemia, hyperphosphatemia, hypocalcemia, and hyperuricemia is the classic presentation of Tumor Lysis Syndrome.

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