In a patient wound healing is not progressively, the possible cause is?

NORCET 3 - 2022 (Shift-2)

Applied Nutrition & Dietetics

Medium

Appeared in: NORCET 3 - 2022 (Shift-2)

Explanation

Vitamin C (ascorbic acid) is a critical cofactor for the enzymes prolyl and lysyl hydroxylase.
These enzymes are necessary for the cross-linking of collagen fibers, which gives new tissue its tensile strength.
Without sufficient Vitamin C, collagen is unstable, leading to fragile capillaries, poor granulation tissue formation, and a high risk of wound dehiscence (reopening).
This specific and non-redundant role in collagen synthesis makes Vitamin C deficiency a classic cause of impaired wound healing.

Option A: While a protein deficiency severely impairs wound healing, it provides the 'building blocks' (amino acids) rather than acting as the specific enzymatic cofactor for collagen synthesis.
Option B: Vitamin D's primary role is in calcium and phosphate metabolism for bone health. It is not directly involved in the synthesis of collagen for soft tissue repair.
Option D: Fat is primarily a source of calories. Its role is to provide energy, thus 'sparing' protein to be used for tissue repair. Its deficiency is an indirect, not direct, cause of poor healing.

Visual 1: Diagram: A flowchart illustrating the stages of wound healing (inflammation, proliferation, remodeling) and highlighting where key nutrients like Vitamin C and protein are utilized.
Visual 2: Infographic: A visual guide to dietary sources of Vitamin C (citrus fruits, bell peppers, broccoli) and protein (lean meats, eggs, legumes) for patient education.

Clinical Relevance

Nursing practice connection: Use the key finding related to Nutritional requirements for wound healing to guide bedside assessment, documentation, and the next nursing action.
Nurses play a vital role in identifying patients at risk for poor wound healing due to malnutrition. This includes performing nutritional screenings and using tools like the Braden Scale, which has a 'Nutrition' subscale.
For any patient with a chronic, non-healing, or pressure wound, a thorough dietary history is essential. The nurse should assess intake of protein, calories, and key micronutrients.
What if? If the patient was also on long-term steroid therapy, the need for Vitamin A would also be a critical consideration, as Vitamin A can help counteract the negative effects of steroids on wound healing.

How to Approach the Question

First, identify the core physiological process in the question: wound healing.
Next, recall the key factors that influence this process. Nutrition is a major factor.
Analyze the options provided, which are all nutritional components. Differentiate the specific role of each nutrient in the context of wound healing.
Recognize the unique and essential role of Vitamin C as a cofactor in collagen synthesis, a fundamental step in building new tissue.
Compare this specific role to the more general roles of protein (building blocks) and fat (energy), and the unrelated role of Vitamin D (bone health), to select the most precise answer.

Concept Tested & Keywords

Concept Tested: Nutritional requirements for wound healing
Stem keywords: wound healing, not progressively, possible cause
Lead-in keywords: NOT
Negative lead-in flag: NOT changes the reasoning strategy; look for the exception or incorrect statement rather than the true statement.

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