Effect of SVV Guided Fluid Therapy on Blood Loss and Postoperative Outcomes

Group A (SVV \<10%): infuse crystalloid 6-10 ml/kg/hr during surgery. Group B (SVV 10-20%): infuse crystalloid 2-4 ml/kg/hr until cystectomy, 6-10 ml/kg/hr after cystectomy

Group A (SVV \<10%): infuse colloid 200 ml if SVV is ≥ 10%. Group B (SVV 10-20%): infuse colloid 200 ml if SVV is \> 20%

Group B (SVV 10-20%): infuse mannitol 0.5 g/kg if SVV is \< 10%

Group B (SVV 10-20%): infuse lasix 5 mg if SVV is \< 10%