Final answer:
The nurse should prioritize managing postoperative pain in the care of this patient.
Step-by-step explanation:
The nurse should prioritize managing postoperative pain in the care of this patient. After resection of a renal tumor, the patient is likely to experience pain and discomfort. Effective pain management is important for the patient's comfort and overall recovery.
While increasing oral intake is important for the patient's hydration and nutrition, it may not be the immediate priority in this case. The patient may have restrictions on oral intake immediately after the surgery.
Managing dialysis may be important in the long-term care of the patient, especially if the resection affects renal function. However, it may not be the immediate priority immediately after the surgery.
Increasing mobility may be important for the patient's overall recovery, but ensuring pain management and stability would be the priority initially.