<prompt> Which of the following values are suggestive of acute tubular necrosis -Urine osmolality 500mosmolL H20Urine sodium 40 meqLBlood urea nitrogen plasma creatinine 20:1Urine creatinineplasma creatinine 40  <response>: In acute tubular necrosis - Urine sodium -40meqL Urine osmolality -350mosmolL BUN plasma creatinine10-15:1 Urine creatinineplasma creatinine-20 Casts-muddy brown Ref:Harrison 20th edition pg no. 291 