The risk factor of hypercalcemia is:

RRB Nsg. Superintendent - 29 April 2025 (Shift-3rd)

Medical & Surgical Nursing

Easy

Appeared in: RRB Nsg. Superintendent - 29 April 2025 (Shift-3rd)

Explanation

Prolonged immobilization is a well-established risk factor for hypercalcemia.
The primary mechanism is an imbalance between bone formation and bone resorption, with resorption becoming dominant.
Lack of mechanical stress from weight-bearing activities leads to the demineralization of bones, causing a release of calcium into the bloodstream.
This is particularly common in individuals with high bone turnover rates, such as children, adolescents, or patients with conditions like Paget's disease.

Option B: Chronic alcohol abuse is a recognized cause of hypocalcemia, the opposite of hypercalcemia.
Option C: Malabsorption syndromes (e.g., Crohn's disease, celiac disease) prevent the adequate absorption of dietary calcium and vitamin D.
Option D: Sepsis and other critical illnesses are more commonly associated with hypocalcemia.

Visual 1: Table: Comparison of Hypercalcemia and Hypocalcemia. This table contrasts the causes, serum levels, and key symptoms of high and low calcium levels, helping to differentiate the two conditions.
Visual 2: Flowchart: Pathophysiology of Immobilization-Induced Hypercalcemia. This visual would show the sequence: Prolonged Immobilization → Decreased Weight-Bearing → Increased Bone Resorption → Calcium Release into Blood → Hypercalcemia.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Risk factors for hypercalcemia as background academic context rather than a clinical decision trigger.
Nurses must be vigilant in monitoring patients on prolonged bed rest for signs of hypercalcemia, such as muscle weakness, constipation, lethargy, and confusion.
Key nursing interventions for immobilized patients include promoting hydration to prevent kidney stones and encouraging as much mobility as possible (even passive range-of-motion exercises) to mitigate bone demineralization.
What if? If the immobilized patient also had primary hyperparathyroidism, the risk and severity of hypercalcemia would be significantly increased, requiring more aggressive monitoring and management.

How to Approach the Question

This is a factual recall question that tests your knowledge of electrolyte imbalances.
First, identify the core concept being asked: a risk factor for hypercalcemia (high calcium).
Systematically evaluate each option based on its known effect on calcium metabolism.
Recall that weight-bearing activity is crucial for maintaining bone density. Therefore, its absence (immobilization) would logically lead to bone breakdown and calcium release.
Eliminate the other options by recognizing them as classic causes of the opposite condition, hypocalcemia (low calcium).

Concept Tested & Keywords

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