One dose of injection cefoperazone 1000 mg + sulbactam 1000 mg after skin test, one dose of metronidazole 500 mg and Amikacin 1000 mg will be given intravenously as prophylaxis pre-operatively at the time of induction of anesthesia. The antibiotics will be continued for 3 days after surgery. A 14 Fr Foley's catheter will be placed pre-operatively after induction of anesthesia.