What is dialyzer?
What is dialyzer?
A dialyzer is often referred to as an “artificial kidney.” Its function is to remove the excess wastes and fluid from the blood, when the patient’s kidneys can no longer perform that task. Dialyzers are made of a thin, fibrous material.
What are the types of dialyzer?
In addition, dialyzers are internationally classified into three types: low-flux, high-flux, and protein-leaking.
What is surface area in dialyzer?
The ability of a dialyzer to remove small molecular weight solutes, such as urea is primarily a function of its membrane surface area. A high efficiency dialyzer is basically a big dialyzer (surface area >1.5 m2). By virtue of its high surface area, it has a high ability to remove urea2.
Can dialysis be reused?
During hemodialysis, a hemodialyzer, or artificial kidney, is used to filter fluids and wastes from a dialysis patient’s blood. Reuse of a hemodialyzer means that the same hemodialyzer (filter) is used more than once for the same patient. When dialyzers are reused, they are cleaned and disinfected after each treatment.
How is a dialyzer made?
The fibers are made up of polymers (synthetic resins or plastics) and the case and endcaps are made of polycarbonate plastic. The potting material that secures the fibers at both ends of the case is also a blend of synthetic resins called polyurethane. The hollow fibers are where the real work of dialysis goes on.
What is high-flux dialysis?
High-flux hemodialysis and hemodiafiltration are renal replacement therapies characterized by an important convective elimination of solutes, thanks to the use of synthetic membranes with a high ultrafiltration coefficient (high-flux membranes).
What is polysulfone dialyzer?
Summary: Polysulfone (PS) membranes with polyvinylpyrrolidone (PVP) as a hydrophilic agent are widely used in dialysis, but blood components adhere to the membrane surface. We developed a new dialyzer, NV, by localizing a new hydrophilic polymer onto the inner surface of a hollow-fiber membrane composed of PS and PVP.
How much blood does dialysis clean?
In hemodialysis, blood is removed from the body and filtered through a man-made membrane called a dialyzer, or artificial kidney, and then the filtered blood is returned to the body. The average person has about 10 to 12 pints of blood; during dialysis only one pint (about two cups) is outside of the body at a time.
What is fiber bundle volume?
Fiber bundle volume (FBV), the total space within the blood compartment of hollow fiber hemodialyzers, correlates closely with dialyzer surface area, a major determinant of solute clearance.
