This – Slow Continuous Ultrafiltration SCUF is a

This System delivers all therapy modalities of CRRT without additional equipment, including: CVVHDF – Continuous Veno-Venous Hemodiafiltrationit is a technique where the ultrafiltrate produced during membrane transit is replaced in part or completely with appropriate replacement solutions to achieve blood purification and volume control.CVVHD – Continuous Veno-Venous HemodialysisIn CVVHD diffusion and ultrafiltration are used to remove waste products. The fluids used are known as dialysate fluids. The dialysate is infused countercurrent to the blood flow, into the outside compartment of the hemofilter to provide a diffusion of wastes from the blood. In diffusive therapy, small molecular wastes and electrolytes diffuse from the high concentration in the blood into the sterile dialyzing fluid on the other side of the membrane and are removed in the ultrafiltrate.

CVVH – Continuous Veno-Venous HemofiltrationIn CVVH diffusion, convection, and ultrafiltration are used to remove wastes and water. In this method, dialysate and replacement fluids are used simultaneously in various combinations of rates. The goal is to offer both a convective therapy, for clearance of middle-molecular-weight substances, and a diffusive therapy, for removal of smaller substancesSCUF – Slow Continuous UltrafiltrationSCUF is a hemofiltration therapy used primarily for fluid removal.44 No dialysate or replacement fluids are used because wastes, electrolyte balance, and acid-base status may not be as critical an issue in patients who have SCUF and in patients who have other CRRTs.

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As it is removed from the hemofilter, ultrafiltrate is regulated to provide a slow, continuous removal of plasma water for diuresis, for example, 50 to 500 mL/h to achieve fluid balance. SCUF is a good therapy of choice when the only goal is fluid removal and the patient does not have azotemia.


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