A client is being discharged to home while recovering from acute renal failure. The client indicates an understanding of the therapeutic dietary regimen if the client states the need to eat foods that are lower in:

1. A

   Fats

2. B

   Vitamins

3. C

   Potassium

4. D

   Carbohydrates

Appeared in: DHS 2018 shift 1st

Explanation

• In acute renal failure, the kidneys lose their ability to excrete potassium effectively.
• This leads to an accumulation of potassium in the blood, a dangerous condition known as hyperkalemia.
• Hyperkalemia can cause severe cardiac dysrhythmias and cardiac arrest, making potassium restriction a critical part of the diet.
• Foods high in potassium, such as bananas, oranges, potatoes, and tomatoes, must be limited.

Why Other Options Were Wrong

• Option A: Fats are not typically restricted; in fact, they are encouraged as a source of non-protein calories to meet energy needs and prevent the breakdown of body tissues for fuel.
• Option B: Vitamins, particularly water-soluble ones (like B vitamins and C), are often lost during dialysis. Therefore, supplementation is usually required, not restriction.
• Option D: Carbohydrates are the body's primary energy source. A liberal intake is encouraged to provide adequate calories, which has a 'protein-sparing' effect, reducing the breakdown of muscle tissue and the production of nitrogenous waste.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Dietary management in acute renal failure (ARF) / acute kidney injury (AKI) as background academic context rather than a clinical decision trigger.
• Patient education is a core nursing responsibility. Nurses must teach patients with renal failure how to read food labels and identify high-potassium foods to ensure adherence and prevent complications at home.
• Nurses must monitor for signs and symptoms of hyperkalemia, including muscle weakness, fatigue, and ECG changes (peaked T waves, widened QRS complex).
• What if? If the patient were in the diuretic phase of ARF (where urine output increases), potassium levels might drop (hypokalemia), and the dietary restriction might be temporarily lifted or even replaced with supplementation. The dietary plan is dynamic and changes with the phase of renal recovery.

How to Approach the Question

• First, identify the core clinical condition in the question: 'acute renal failure'.
• Recall the primary pathophysiology of renal failure: the kidneys fail to excrete waste products and regulate electrolytes.
• Consider the function of each nutrient listed in the options. Ask yourself, 'How does renal failure affect the body's ability to handle this nutrient?'
• For potassium, recall that impaired excretion leads to toxic buildup (hyperkalemia), a medical emergency. This makes restriction necessary.
• For fats and carbohydrates, recognize their role as energy sources. In a catabolic state like ARF, providing calories is crucial to spare protein.
• For vitamins, think about the impact of a restricted diet and potential treatments like dialysis, which often leads to deficiencies, not excess.

Concept Tested & Keywords

• Concept Tested: Dietary management in acute renal failure (ARF) / acute kidney injury (AKI).
• Stem keywords: acute renal failure, discharged, therapeutic dietary regimen, lower in
• Lead-in keywords: indicates an understanding
• Clinical cues: The patient's diagnosis of acute renal failure is the primary cue, as it directly dictates specific dietary restrictions related to electrolyte and fluid balance.

Question ID

Qh340H-rj2woTXcSiBXOu8

Copy ID

Reference Book

E6 Nutrition Kumud Khanna 2e p. 358-360

E6 Medicine Davidson Principles Practice 24e p. 438-440