Patients Undergoing Continuous Venovenous Hemodiafiltration: Effects of Increased Blood Flow

"Patients will be exposed to continuous venovenous renal therapy with distinct blood flows in 2 periods, to be defined by draw. The control group will have a flow of 150ml/min and the intervention group 250ml/min. Therapy is intended for a period of 72 hours (maximum defined by the manufacturer); with a 6-hour washout and, after that, the arm is changed to be exposed to the other blood flow."