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Slow continuous ultrafiltration (SCUF) is an artificial method which approximately mimics the ultrafiltration function of the kidneys. SCUF is a continuous renal replacement therapy (CRRT) generally used to remove fluid from fluid overloaded patients with acute kidney failure. During SCUF blood is continuously removed from the body, passed ...
In 1986, the term continuous renal replacement therapy was applied to all these continuous approaches. [16] The technology and terminology were expanded to include slow continuous ultrafiltration for fluid removal without replacement, continuous arteriovenous hemodialysis (CAVHD), and continuous arteriovenous hemodiafiltration. [17]
Hemofiltration is sometimes used in combination with hemodialysis, when it is termed hemodiafiltration. Blood is pumped through the blood compartment of a high flux dialyzer, and a high rate of ultrafiltration is used, so there is a high rate of movement of water and solutes from blood to dialysate that must be replaced by substitution fluid that is infused directly into the blood line.
Using a form of ultrafiltration, the filter separates the excess salt and water from the blood and the blood is returned to the patient while the fluid is collected in a bag for later disposal. Anti-coagulation therapy is often used with aquapheresis to prevent blood from clotting the ultrafiltration filter.
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Ultrafiltration (UF) is a variety of membrane filtration in which forces such as pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the ...