A nurse is assessing a client who is postoperative following abdominal surgery and has an indwelling urinary catheter that is draining dark yellow urine at 25 mL/hr. Which of the following interventions should the nurse anticipate?

The correct answer is D: Administer a fluid bolus. Dark yellow urine and a low urinary output of 25 mL/hr can indicate dehydration or inadequate fluid intake. Administering a fluid bolus will help improve the client's hydration status and increase urine output. Clamping the catheter tubing for 30 minutes (choice A) can lead to urinary retention and is not indicated. Obtaining a urine specimen for culture and sensitivity (choice B) is important but not the priority in this situation. Initiating continuous bladder irrigation (choice C) is not necessary based on the information provided. Therefore, the best initial intervention is to administer a fluid bolus to address dehydration and improve urinary output.