The nurse is reviewing data for a patient with acute kidney injury. Which diagnostic test results should the nurse recognize that indicate kidney injury? (Select all that apply.)
a. Hematocrit 20%
b. Uric acid 8 ng/dL
c. Serum creatinine 4.2 mg/dL
d. Blood urea nitrogen 40 mg/100 mL
e. Urine output of 100 mL in 24 hours
f. Fixed urine specific gravity of 1.010
ANS: C, E, F
A serum creatinine level above 1.5 mg/dL means there is kidney dysfunction. The higher the creatinine level, the more impaired the kidney function. A fixed urine specific gravity is also indicative of renal compromise and impending failure. Normal urinary output is 1000 to 2000 mL per 24 hours. Individuals with acute kidney injury experience oliguria (reduced output). A. B. D. These test results are not consistent with a renal injury.
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