Final answer:
A return to normal weight, a urine output of 3700 mL/day, and decreasing blood urea nitrogen (BUN) and creatinine levels indicate that a patient with AKI is in the recovery phase.
Step-by-step explanation:
The nurse can determine that a patient with AKI is in the recovery phase based on several indicators. One such indicator is a decrease in blood urea nitrogen (BUN) and creatinine levels. As the kidneys start to recover, these waste products are cleared from the body more efficiently, leading to a decrease in their levels in the blood.
Other indicators include a return to normal weight as fluid balance is restored and a urine output of 3700 mL/day as the kidneys regain their ability to produce and excrete urine normally.
Additionally, there may also be a decrease in sodium and potassium levels as these electrolytes are properly regulated by the recovering kidneys.