This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
A 50 years old female is admitted with abdominal pain and anuria. Radiological studies revealed: bilateral impacted ureteric stones with hydronephrosis. Urine analysis showed RBCs with pus cells in urine. Serum creatinine level was 16 mg/dL and urea level was 200 mmol/L. Which of the following should be the immediate treatment? 
Select and explain. 
A. Hemodialysis, B. 'j' stent drainage, C. Lithotripsy, D. Ureteroscopic removal of stones
B: 'j' stent drainage
Answer: B: 'j' stent drainage 
Explanation: Ans. (b) 'j' stent drainage* Prompt drainage of the obstructed urinary system by double) stent is the TOC in patients with renal failure.* Hemodialysis is advised only if the renal recovery is prolonged.