HemoDiaFiltration -Model HDF -Home Dialysis
HDF is a combination of hemofiltration and hemodialysis which can be preferred to these 2 methods. Reasons for this are, for example, the higher clearance of medium size substances when compared to hemodialysis or less dependence on blood flow when compared to hemofiltration.
Renal failure
This therapy is usually performed such as hemodialysis, at least 3 times per week and up to 7 times during 2-8 hours.
In HDF, blood is passed through a hemo(dia)filter while dialysate is injected on the other side of the semi-permeable membrane at a rate which is less than that of the drain flow, which also includes ultrafiltrate, thus combining the filtration process to the dialysis one. In HDF, substitution fluid must be injected in the blood to compensate for the filtration flow.