The nurse is caring for a patient who has developed kidney failure. Which test finding leads the nurse to contact the nephrologist and arrange for emergency hemodialysis?
a. Serum potassium level 7.4 mEq/L
b. Serum creatinine level of 2.8 mg/dL
c. Large amounts of protein in the urine
d. 1500 mL of retained urine in the bladder
ANS: A
Patients in renal failure often require dialysis once the serum potassium level exceeds 6.5 mEq/L. Critically high serum potassium levels can lead to lethal arrhythmias and must be corrected promptly. Patients with advanced renal failure may require emergency hemodialysis if the potassium level does not lower with other methods (insulin and 50% dextrose, kayexalate).
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