What is a Hemoconcentrator?

What is a Hemoconcentrator?

A hemoconcentrator is a fluid removal device used during cardio bypass surgery. The device is inserted into the extracorpeal circuit where it acts to control hemodilution, maintain hematocrit levels, and reduce the need for additional blood products during and after surgery.

How does a hemoconcentrator work?

Using the HEMOCOR HPH® hemoconcentrator: Maintains oncotic pressure by retaining plasma proteins while quickly and gently removing excess plasma water. Minimizes the need for diuretic use, which may be contraindicated for some patients.

What is ZBUF?

For decades, various intraoperative ultrafiltration techniques such as conventional ultrafiltration, modified ultrafiltration (MUF), zero-balance ultrafiltration (ZBUF), and combination techniques (ZBUF-MUF) have been used to mitigate these toxicities and promote improved postoperative outcomes.

What is Z Buf?

Zero-balance ultrafiltration (Z-BUF) is the process by which a solution (replacement fluid) is infused into the CPB circuit and an equal volume of fluid is removed via an ultrafiltration column. This process allows small molecules to be removed from the blood, while cells and most proteins remain.

What is modified ultrafiltration?

Modified ultrafiltration is a technique able to remove the fluid overload and inflammatory mediators associated with use of cardiopulmonary bypass. It has been shown to reduce morbidity after cardiac operations in children, but the impact on adult cardiac procedures is unknown.

Is ultrafiltration the same as dialysis?

Ultrafiltration is the removal of fluid from a patient and is one of the functions of the kidneys that dialysis treatment replaces.

Is UF filter necessary?

A reverse osmosis system provides the most extensive filtration because the RO membrane has the smallest pore size, but this level of filtration is not always necessary or preferred. A UF system retains beneficial minerals that an RO system removes.

How do you do modified ultrafiltration?

Modified Ultrafiltration Technique As the patient is separated from the CPB, the clamp is removed from the inlet of the filter, allowing the blood to flow through the arterial line to the filter (10-15 mL/kg/min), and finally from the cardioplegic cannula, as a venous line returns to the right atrium (Figure 1) (13).

What is modified ultrafiltration adjunct to cardiopulmonary bypass?

What can ultrafiltration remove?

Ultrafiltration (UF) uses standard home water pressure to push water through a semipermeable membrane and remove any contaminants. Unlike reverse osmosis, ultrafiltration retains minerals in the water, while filtering out bacteria, viruses, and parasites.

What is a major factor affecting ultrafiltration?

Some things that can cause ultrafiltration to fail include uremia (high blood urea nitrogen), peritonitis (infection of the peritoneal membrane), and high dextrose PD solution (especially 4.25%). These factors cause inflammation of the peritoneal membrane.

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