Which vitamin is most likely to be deficient in full thickness burn injury?

AIIMS Delhi NO - 2017

Medical & Surgical Nursing

Medium

Appeared in: AIIMS Delhi NO - 2017

Explanation

The skin is the primary site of Vitamin D synthesis, where 7-dehydrocholesterol is converted to cholecalciferol (Vitamin D3) upon exposure to sunlight (UVB radiation).
A full-thickness burn destroys the epidermis and dermis, completely eliminating the skin's ability to produce Vitamin D.
This direct loss of the synthesis organ makes Vitamin D deficiency a highly probable and direct consequence of severe burn injuries, distinguishing it from other vitamin deficiencies that arise from increased metabolic demand.

Option A: While Vitamin A is crucial for epithelialization and immune response, and its demand increases in burn patients, its deficiency is not as directly and uniquely linked to the loss of skin as Vitamin D. The primary issue is increased utilization, not loss of production.
Option B: Vitamin B1 (Thiamine) is a water-soluble vitamin essential for carbohydrate metabolism. Its requirements are elevated due to the hypermetabolic state post-burn, but the skin injury itself does not cause the deficiency.
Option C: Vitamin E is a fat-soluble antioxidant. Its needs increase to combat oxidative stress from the injury. However, like Vitamin A, the deficiency is due to increased consumption, not a halt in production caused by the skin damage.

Clinical Relevance

Nursing practice connection: Knowing Nutritional Deficiencies in Burn Patients helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses must anticipate Vitamin D deficiency in patients with extensive full-thickness burns and advocate for early serum level monitoring and aggressive supplementation as part of the nutritional plan.
Nutritional support is a cornerstone of burn care. This includes providing a high-calorie, high-protein diet and supplementing with multivitamins, especially fat-soluble vitamins (A, D, E, K), to meet the massive metabolic demands.
What if the patient has a partial-thickness burn? Vitamin D synthesis would be impaired but may not be completely absent. Supplementation is still crucial due to hypermetabolism, but the absolute dependency is less than with full-thickness destruction.

How to Approach the Question

First, identify the key pathophysiology in the question: 'full-thickness burn'. This means all layers of the skin are destroyed.
Next, recall the primary functions of the skin beyond being a protective barrier. A major endocrine function is the synthesis of Vitamin D from sunlight.
Evaluate each vitamin option based on this specific injury. Ask, 'How does the complete destruction of the skin affect this vitamin's status?'
For Vitamin D, the synthesis pathway is directly halted. For Vitamins A, B1, and E, the primary issue is increased metabolic demand and wound healing needs, which is a secondary effect.
Conclude that the vitamin whose primary synthesis pathway is directly destroyed by the injury (Vitamin D) is the most likely to become deficient.

Concept Tested & Keywords

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