A nurse is teaching about nutrition to a client who has a new diagnosis of chronic kidney disease. Which of the following recommendations should the nurse include in the teaching?

Choice A reason: Serum creatinine 3.5 mg/dL is high and indicates the need for further assessment. Creatinine is a waste product of muscle metabolism that is filtered by the kidneys. High creatinine levels can indicate kidney damage or impaired renal function.

Choice B reason: Hematocrit 45% is within the normal range (37-47% for women, 40-50% for men), and it does not indicate the need for further assessment. Hematocrit is the percentage of red blood cells in the blood. Low hematocrit levels can indicate anemia, bleeding, or hemolysis.

Choice C reason: Blood urea nitrogen 18 mg/dL is within the normal range (7-20), and it does not indicate the need for further assessment. Blood urea nitrogen is a waste product of protein metabolism that is filtered by the kidneys. High blood urea nitrogen levels can indicate dehydration, kidney damage, or high protein intake.

Choice D reason: Sodium 140 mEq/L is within the normal range (135-145), and it does not indicate the need for further assessment. Sodium is an electrolyte that helps maintain fluid balance, blood pressure, and nerve impulses. Low or high sodium levels can cause confusion, seizures, or coma.

Choice A reason: Reducing the client's sodium intake is an appropriate intervention for the nurse to take because it can help prevent fluid retention and edema, which are complications of heart failure. Sodium intake should be limited to 2 g per day or less for clients who have heart failure.

Choice B reason: Restricting the client's protein intake is not an appropriate intervention for the nurse to take because it can cause malnutrition and muscle wasting, which can worsen heart failure. Protein intake should be adequate to meet the client's nutritional needs and support cardiac function. Protein intake should be about 0.8 to 1.2 g per kg of body weight per day for clients who have heart failure.

Choice C reason: Weighing the client once per week is not an appropriate intervention for the nurse to take because it can delay the detection and treatment of fluid overload, which can worsen heart failure. The client should be weighed daily at the same time and with the same scale and clothing to monitor fluid status and adjust medication dosage.

Choice D reason: Providing the client with three large meals per day is not an appropriate intervention for the nurse to take because it can increase the workload of the heart and cause dyspnea, fatigue, or chest pain, which are symptoms of heart failure. The client should be provided with small, frequent meals that are low in sodium, fat, and cholesterol to reduce cardiac stress and promote digestion.