The patient undergoes a cardiac catheterization that requires the use of contrast dyes during the procedure. To detect signs of contrast-induced kidney injury, the nurse should

Correct Answer: B

Rationale: Correct Answer: B Rationale: 1. Contrast dyes can cause kidney injury due to their nephrotoxic effects. 2. Serum creatinine levels are a reliable indicator of kidney function. 3. Evaluating serum creatinine for up to 72 hours after the procedure allows detection of any contrast-induced kidney injury. 4. Monitoring serum creatinine helps in early identification and intervention for renal complications. Summary: A: Incorrect. Urine output alone is not a definitive indicator of kidney injury. C: Incorrect. Renal ultrasound is not typically used for detecting contrast-induced kidney injury. D: Incorrect. Postvoid residual volume is not specific for contrast-induced kidney injury.

Correct Answer: A

Rationale: The correct answer is A: the same as for men. GFR is calculated based on factors like age, weight, and serum creatinine levels, which are not directly influenced by gender. Therefore, the creatinine clearance for women is the same as for men. Choices B, C, and D are incorrect because there is no inherent biological difference between men and women that would cause a difference in creatinine clearance for GFR calculation.

Correct Answer: C

Rationale: The correct answer is C (80 mL/hour) as it is considered a minimally acceptable urine output for a patient weighing 75 kg. Adequate urine output is crucial for kidney function and fluid balance. The general rule is to maintain a urine output of at least 0.5 mL/kg/hour, which in this case would be 37.5 mL/hour for a 75 kg patient. Option C (80 mL/hour) exceeds this minimum requirement, ensuring proper kidney perfusion and waste elimination. Options A (Less than 30 mL/hour) and D (150 mL/hour) are incorrect as they fall below or exceed the recommended urine output range, potentially indicating renal impairment or fluid overload, respectively. Option B (37 mL/hour) is close to the minimum requirement but does not provide a sufficient margin for variations in fluid status or kidney function.

Correct Answer: A

Rationale: The correct answer is A: a diet of 2500 to 3500 kcal per day. During hemodialysis, patients often experience increased energy expenditure due to the treatment process. Therefore, maintaining a higher caloric intake is crucial to prevent malnutrition and support the body's needs. Options B, C, and D are incorrect as limiting protein intake to less than 50 grams per day may lead to malnutrition in a patient undergoing hemodialysis, restricting potassium intake to 10 mEq per day may not be appropriate as individual needs vary, and restricting fluid intake to less than 500 mL per day can lead to dehydration and electrolyte imbalances in a patient undergoing hemodialysis.

Correct Answer: D

Rationale: The correct answer is D: ultrafiltration. Ultrafiltration involves the removal of plasma water and low-molecular weight particles using a pressure or osmotic gradient. This process allows small molecules to pass through a semipermeable membrane while retaining larger molecules. Dialysis (A) involves the removal of waste products and excess fluids from the blood, while diffusion (B) is the movement of molecules from an area of high concentration to low concentration. Clearance (C) refers to the rate at which a substance is removed from the blood by a specific organ or process. Ultrafiltration specifically targets the removal of plasma water and low-molecular weight particles through a pressure or osmotic gradient, making it the correct choice in this context.