A patient is in the recovery phase of acute tubular necrosis (ATN). What manifestations should the nurse observe that indicate this phase is progressing as expected?
Select all that apply.
1. elevated serum potassium level
2. urine output excessive for intake
3. elevated blood urea nitrogen level
4. decrease in serum phosphate level
5. urine output low in relation to intake
Correct Answer: 1, 2, 3
The recovery phase of ATN is characterized by a process of tubule cell repair and regeneration and gradual return of the GFR to normal. Diuresis may occur as the nephrons and GFR recover. Serum potassium, BUN, and serum phosphate levels remain high and may continue to rise in spite of increasing urine output.
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