A patient presents with hypercalcemia due to malignancy. According to the correct sequence of management, what should be the first step?

Appeared in: INI-CET EXAM -2026

Explanation

The first principle in treating hypercalcemia is restoring normal hydration with intravenous normal saline.
Hypercalcemia induces a state of dehydration by causing polyuria, which in turn reduces the glomerular filtration rate (GFR) and the kidney's ability to excrete calcium.
Rehydration expands the extracellular fluid volume, which increases GFR and enhances renal calcium clearance, forming the cornerstone of initial management.
This initial step can lower serum calcium by 1-3 mg/dL within 24 hours.

Option A: Loop diuretics should only be given after the patient is adequately rehydrated. Administering them to a dehydrated patient will worsen volume depletion and renal function, thereby exacerbating hypercalcemia.
Option C: Bisphosphonates are a definitive treatment but are not the first step because their onset of action is delayed, typically taking 24 to 72 hours to effectively lower calcium levels.
Option D: This option is too vague and non-specific. While supportive care is part of the overall management plan, the question asks for the specific, priority therapeutic action to correct the life-threatening electrolyte imbalance.

Clinical Relevance

Nursing practice connection: Safe nursing care depends on performing Management of Hypercalcemia of Malignancy in the correct sequence, documenting the action clearly, and monitoring for the expected response.
Hypercalcemia of malignancy is a common oncologic emergency that can lead to confusion, cardiac arrhythmias, renal failure, and coma if not treated promptly.
Nurses are responsible for the rapid administration of IV fluids, meticulous monitoring of intake and output, and frequent assessment for signs of fluid overload, especially in elderly patients or those with pre-existing heart or kidney disease.
Patient safety is paramount; this includes implementing seizure precautions and assisting with mobility due to potential muscle weakness and altered mental status.

How to Approach the Question

First, identify the question type. This is a priority-based question asking for the 'first step' in a clinical management sequence.
Analyze the clinical scenario: The patient has hypercalcemia of malignancy, which is an oncologic emergency.
Recall the core pathophysiology: Hypercalcemia causes dehydration, which in turn worsens the hypercalcemia by impairing renal excretion. This creates a vicious cycle.
Based on this pathophysiology, the logical first step is to break the cycle by correcting the dehydration.
Evaluate the options in this context: Intravenous rehydration directly addresses the dehydration. Diuretics would worsen it. Bisphosphonates are too slow for an initial emergency action.
Select the option that represents the most immediate and foundational intervention, which is IV rehydration with normal saline.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 2 p. 1188-1190

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 4 p. 31-33

Practise the full INI-CET EXAM -2026

Attempt every question from this paper in a timed mock, then review the full solution for each one.