Which of these is a high-calorie diet?

Appeared in: Bihar CHO - 2021

Explanation

A high-calorie diet is composed of nutrients that provide a significant amount of energy, measured in kilocalories (kcal).
Carbohydrates, fats, and proteins are the three essential macronutrients that the body uses for energy.
Fats are the most energy-dense, providing 9 kcal per gram, while carbohydrates and proteins each provide 4 kcal per gram.
Therefore, a diet focusing on these three components is considered a high-calorie diet.

Option A: While carbohydrates provide calories, minerals and vitamins are micronutrients that are essential for bodily functions but do not yield any energy (0 kcal).
Option B: Plasma is the liquid component of blood and is not a dietary nutrient consumed for energy. Only carbohydrates in this option provide calories.
Option D: Vitamins, like minerals, are micronutrients that do not provide calories. Only carbohydrates in this group are an energy source.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Macronutrients and Caloric Value as background academic context rather than a clinical decision trigger.
Nurses often manage high-calorie, high-protein diets for patients with increased metabolic needs, such as those with severe burns, sepsis, cancer cachexia, or major surgery, to promote tissue repair and prevent malnutrition.
Monitoring for tolerance of a high-calorie diet is crucial, including assessing for gastrointestinal issues like nausea, vomiting, or diarrhea.
What if? If a patient requiring a high-calorie diet also has chronic kidney disease (CKD), the protein component must be carefully controlled and is often restricted to prevent worsening uremia. The focus would shift to increasing calories from carbohydrates and fats.

How to Approach the Question

First, understand the question is asking to identify the group of substances that constitute a high-calorie diet.
Recall the basic classification of nutrients into macronutrients (provide energy) and micronutrients (do not provide energy).
Identify the three macronutrients: carbohydrates, fats, and proteins.
Evaluate each option to see which one contains only energy-yielding macronutrients.
Eliminate options containing non-caloric substances like minerals, vitamins, or non-dietary components like plasma.

Concept Tested & Keywords

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E6 Nutrition Monika Sharma 3e p. 49-51

E6 Nursing Fundamentals Potter Perry 12e Part 5 p. 180-182

Practise the full Bihar CHO - 2021

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