A nurse is reinforcing nutrition teaching for a client who has chronic kidney disease about limiting foods high in potassium. Which of the following foods should the nurse instruct the client to avoid? (Select all that apply.)
Orange juice.
White rice.
Corn flakes cereal.
Watermelon.
Bananas.
Correct Answer : A,E
The correct answer is Choice A, Choice E
Choice A rationale: Orange juice contains approximately 496 mg of potassium per 8 oz serving, making it a high-potassium beverage. In chronic kidney disease, impaired renal excretion of potassium leads to accumulation and risk of hyperkalemia. Normal serum potassium levels range from 3.5 to 5.0 mEq/L. Elevated levels can cause cardiac arrhythmias, muscle weakness, and paralysis. Avoiding potassium-rich fluids like orange juice is essential to prevent life-threatening complications in clients with reduced glomerular filtration rates.
Choice B rationale: White rice contains approximately 26 mg of potassium per 1 cup cooked, classifying it as a low-potassium food. It is safe for clients with chronic kidney disease and often recommended due to its minimal contribution to serum potassium levels. Unlike whole grains, white rice has reduced mineral content, including potassium and phosphorus. Maintaining serum potassium within the normal range of 3.5 to 5.0 mEq/L is critical, and white rice does not pose a risk of hyperkalemia.
Choice C rationale: Corn flakes cereal contains approximately 30 to 40 mg of potassium per 1 cup serving, making it a low-potassium option suitable for renal diets. It lacks the bran and whole grain components that elevate potassium content in other cereals. In chronic kidney disease, dietary potassium restriction is necessary to prevent hyperkalemia. Corn flakes do not significantly affect serum potassium levels, which should remain between 3.5 and 5.0 mEq/L to avoid neuromuscular and cardiac disturbances.
Choice D rationale: Watermelon contains approximately 112 mg of potassium per 100 grams, which is considered low to moderate. While excessive intake could contribute to potassium load, typical servings do not pose a significant risk. In chronic kidney disease, potassium restriction targets foods exceeding 200 mg per serving. Watermelon’s potassium content is below this threshold, making it generally safe when consumed in moderation. Serum potassium should be maintained within 3.5 to 5.0 mEq/L to prevent hyperkalemia.
Choice E rationale: Bananas contain approximately 422 mg of potassium per medium fruit, placing them among the highest potassium-containing fruits. In chronic kidney disease, potassium excretion is impaired, and consuming bananas can rapidly elevate serum potassium levels. Hyperkalemia increases the risk of ventricular arrhythmias and cardiac arrest. Dietary potassium restriction is essential to maintain levels within the safe range of 3.5 to 5.0 mEq/L. Therefore, bananas should be avoided to prevent life-threatening electrolyte disturbances.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
A 2-hour blood glucose level of 132 mg/dL is below the threshold for diabetes diagnosis, which is 200 mg/dL or higher.
Choice B rationale
An HbA1c level of 5.2% is within the normal range. Diabetes is diagnosed with an HbA1c of 6.5% or higher.
Choice C rationale
A casual blood glucose level of 178 mg/dL is elevated but not diagnostic of diabetes. Diabetes is diagnosed with a casual blood glucose level of 200 mg/dL or higher.
Choice D rationale
A fasting blood glucose level of 155 mg/dL is above the threshold for diabetes diagnosis, which is 126 mg/dL or higher. This indicates that the client is at risk for diabetes mellitus.
Correct Answer is D
Explanation
Choice A rationale
Providing a low protein diet is incorrect. Clients with COPD often require a high-protein diet to maintain muscle mass and support respiratory function. Protein is essential for the repair and maintenance of body tissues, including respiratory muscles. A low-protein diet could lead to muscle wasting and decreased respiratory function.
Choice B rationale
Instructing the client to cough every 4 hours is incorrect. Clients with COPD should be encouraged to perform controlled coughing techniques more frequently to clear secretions and prevent respiratory infections. Coughing every 4 hours may not be sufficient to maintain airway patency and prevent complications.
Choice C rationale
Advising the client to lie down after eating is incorrect. Clients with COPD should avoid lying down immediately after eating to prevent gastroesophageal reflux, which can exacerbate respiratory symptoms. Instead, they should remain upright for at least 30 minutes after meals to aid digestion and reduce the risk of aspiration.
Choice D rationale
Encouraging the client to drink 8 glasses of water a day is correct. Adequate hydration helps to thin mucus secretions, making them easier to expectorate. This can improve airway clearance and reduce the risk of respiratory infections. Additionally, staying hydrated supports overall health and well-being.
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