Answer :
Final answer:
The typical range of urine sodium in Acute Tubular Necrosis (ATN) is more than 40 mEq/L, indicating a failure of the tubules to reabsorb sodium effectively.
Explanation:
The typical range of urine sodium (Na) in Acute Tubular Necrosis (ATN) is more than 40 mEq/L. This indicates that the kidney tubules are damaged and therefore not able to reabsorb sodium effectively. In the context of ATN, tubules fail to reabsorb filtered sodium, hence, a higher sodium concentration is found in the urine. The inability to reabsorb sodium properly can be indicative of ATN given the normal physiological process where the tubules actively reabsorb sodium to maintain electrolyte and fluid balance.
