Which of the following indices a nurse has to consider as an indicator of good nutrition?

NCL (MP) Nursing Officer - 2019

Applied Nutrition & Dietetics

Hard

Appeared in: NCL (MP) Nursing Officer - 2019

Explanation

Pre-albumin is a sensitive protein marker used to assess short-term nutritional status.
It has a short half-life of approximately 2 days, meaning its levels change quickly in response to changes in protein and calorie intake.
The provided value of 18 mg/dL is within the normal reference range (typically 15-36 mg/dL), indicating adequate recent nutritional intake.
This makes it a reliable indicator for monitoring the effectiveness of nutritional support in a clinical setting.

Option A: An albumin level of 2.5 gm/dl is significantly low (normal range: 3.5-5.0 gm/dl) and is a clear indicator of chronic malnutrition, not good nutrition.
Option C: While a transferrin level of 244 mg/dl is within the normal range (approx. 200-400 mg/dl), it is not the best indicator. Transferrin levels are heavily influenced by iron status (they increase in iron deficiency) and can be affected by inflammation, reducing its specificity as a nutritional marker.
Option D: A total lymphocyte count of 1900/µL is normal (typically >1500/µL). However, it is a very non-specific marker for nutritional status. Lymphocyte counts can be depressed by malnutrition but are also affected by infections, stress, surgery, and various medical conditions.

Clinical Relevance

Nursing practice connection: Knowing Nutritional Assessment Markers helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses frequently monitor these lab values to assess the nutritional status of patients, especially those at risk for malnutrition, such as post-operative, elderly, or critically ill patients.
Monitoring pre-albumin is crucial for evaluating the effectiveness of nutritional interventions like enteral feeding or total parenteral nutrition (TPN), as its levels respond quickly to therapy.
A patient's nutritional status directly impacts wound healing, immune response, and overall recovery. Early identification of malnutrition allows for timely intervention, improving patient outcomes.

How to Approach the Question

First, identify the core question: it asks for an indicator of 'good nutrition'. This implies you are looking for a value that is within a healthy or normal range.
Next, evaluate each option. Recall or look up the normal laboratory ranges for albumin, pre-albumin, transferrin, and total lymphocytes.
Analyze each given value against its normal range. Option A (Albumin 2.5) is clearly abnormal and indicates poor nutrition, so it can be eliminated.
Compare the remaining options (B, C, D), which are all within normal ranges. Consider the specificity and sensitivity of each test as a nutritional marker.
Recall that pre-albumin has the shortest half-life, making it the most sensitive indicator of current nutritional status. Transferrin is affected by iron levels, and lymphocytes are affected by many non-nutritional factors.
Conclude that a normal pre-albumin level is the strongest and most direct indicator of good current nutrition among the choices provided.

Concept Tested & Keywords

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E6 Nutrition Monika Sharma 3e p. 301-303

E6 Medicine Harrison 22e Part 2 pp. 521-523, 522-524