Difference Between Dialysis and Ultrafiltration

Hemodialysis is one of the machines that we use to replace some of the functions of the kidney. The kidney performs many functions and a hemodialysis machine can replace some of those functions. Ultrafiltration is the removal of fluid volume from a patient.

1. Is ultrafiltration the same as dialysis?
2. What is the difference between hemofiltration and dialysis?
3. What does UF mean in dialysis?
4. What role does ultrafiltration play in dialysis?
5. Why is it called ultrafiltration?
6. What is ultrafiltration process?
7. Is potassium removed during dialysis?
8. What is ultrafiltration rate in dialysis?
9. How is Hemofiltration done?
10. What UF means?
11. How is UF calculated?
12. What is TMP in dialysis?

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.

What is the difference between hemofiltration and dialysis?

Diffusive therapy (hemodialysis) removes small solutes mainly, whereas convective therapies (hemofiltration and hemodiafiltration) may also eliminate larger molecules such as myoglobin or cytokines. Conversely, convective therapies might predispose patients to filter clotting and thus increased costs.

What does UF mean in dialysis?

Ultrafiltration failure. UFF, which can be defined as ultrafiltration (UF) of less than 400 mL after a 4-hour dwell duration with a 4.25% dextrose-based peritoneal dialysis fluid (PDF), is a clinical condition that has an increasing incidence with chronic PD duration.

What role does ultrafiltration play in dialysis?

Under hemodialysis, if the pressure outside the hollow fiber is lower than inside, body water is removed from the blood that flows through the hollow fiber. This process is called ultrafiltration and removes excess water from the body.

Why is it called ultrafiltration?

-The process of glomerular filtration is known as ultrafiltration because blood is filtered very finely through all the membranes such that all the components of the blood plasma are passed on except proteins.

What is ultrafiltration process?

Ultrafiltration (UF) is a membrane filtration process similar to Reverse Osmosis, using hydrostatic pressure to force water through a semi-permeable membrane. ... Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane.

Is potassium removed during dialysis?

The average potassium removal during dialysis was 1.22 ± 0.24 mEq/kg body weight and correlated with predialysis PK (r = 0.75, p = 0.0001) as would be anticipated, since the blood to dialysate concentration gradient is larger when PK is higher.

What is ultrafiltration rate in dialysis?

Ultrafiltration rate (UFR) is a composite metric of IDWG, treatment time, and postdialysis weight, calculated with each dialysis treatment. High IDWG or short treatment times may necessitate higher UFRs.

How is Hemofiltration done?

During hemofiltration, a patient's blood is passed through a set of tubing (a filtration circuit) via a machine to a semipermeable membrane (the filter) where waste products and water (collectively called ultrafiltrate) are removed by convection. Replacement fluid is added and the blood is returned to the patient.

What UF means?

UF is abbreviation for the University of Florida.

How is UF calculated?

For both measures, the UF rate is calculated as UF rate (milliliters per hour per kilogram) = (predialysis weight − postdialysis weight [milliliters])/delivered TT (hours)/postdialysis weight (kilograms).

What is TMP in dialysis?

The major driving force that determines the rate of ultrafiltration or convective flow is the difference in hydrostatic pressure between the blood compartment and the dialysate compartments across the dialysis membrane; this is called the transmembrane pressure (TMP).