A patient has been admitted to the hospital for a long time or is bedridden. Which action should be preferred by the nurse to prevent bone demineralization?

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

The primary cause of bone demineralization in immobile patients is the lack of weight-bearing stress, a condition known as disuse osteoporosis.
Ambulation provides the necessary mechanical load on the skeleton, which stimulates osteoblastic (bone-building) activity and helps maintain bone density.
According to Wolff's Law, bone adapts to the loads under which it is placed. Without the stress of walking, the body begins to resorb bone mineral, leading to weakness.
While nutrition is important, the physiological signal from weight-bearing exercise is the most critical factor in preventing bone loss from immobility.

Option A: Changing the patient's side every 2 hours is a crucial intervention to prevent pressure injuries (bedsores) by relieving pressure on the skin and subcutaneous tissues. It does not provide the weight-bearing stimulus needed to prevent bone demineralization.
Option B: While a balanced diet is essential for overall health and provides necessary nutrients for bone health (like protein, vitamins, and minerals), it cannot by itself prevent disuse osteoporosis. The mechanical stimulus from weight-bearing is required.
Option C: Offering milk or dairy products provides calcium and vitamin D, which are the building blocks for bone. However, simply providing these nutrients is insufficient. Without the mechanical stress from weight-bearing activities, the body cannot effectively use the calcium to strengthen bones.

Clinical Relevance

Nursing practice connection: Use the key finding related to Prevention of bone demineralization in immobilized patients to guide bedside assessment, documentation, and the next nursing action.
Nurses play a vital role in preventing 'iatrogenic' or hospital-acquired complications. Disuse osteoporosis is a preventable complication of prolonged bed rest.
Early mobilization protocols are a standard of care in many hospitals to reduce complications like bone demineralization, DVT, pneumonia, and pressure injuries.
What if the patient cannot ambulate? The principle of weight-bearing still applies. The nurse should advocate for physical therapy to use interventions like a tilt table or standing frame to apply mechanical load to the bones.

How to Approach the Question

First, identify the core physiological problem in the question: 'bone demineralization' in a 'bedridden' patient.
Recall the physiology of bone maintenance. What stimulates bone to stay strong? The key concept is mechanical stress or weight-bearing.
Analyze each option based on this principle. Ask yourself, 'Does this action apply mechanical stress to the bones?'
Evaluate 'Ambulation in hall'. This is a direct weight-bearing activity. It directly addresses the root cause of the problem.
Evaluate the other options. 'Side change' is for skin pressure. 'Diet' and 'milk' provide building materials but don't trigger the building process. They are supportive, not primary.
Conclude that the action that most directly counteracts the cause of the problem (lack of weight-bearing) is the preferred intervention.

Concept Tested & Keywords

Concept Tested: Prevention of bone demineralization in immobilized patients
Stem keywords: bedridden, long time, bone demineralization, prevent
Lead-in keywords: preferred
Clinical cues: The patient is bedridden or has been in the hospital for a long time, indicating a high risk for complications of immobility.

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Practise the full NORCET 2 - 2021 (shift-1)

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