Dialysis membranes

Hello

Is additional pressure needed to pass blood through dialysis membrane?
Do dialysis membranes get clogged and how long they last?

Thanks!

Typically heparin is used to prevent the fibers in the dialyzer from clotting. There is a blood pump on the dialysis machine that pushes the blood through the dialysis lines. The blood pump is set according to the patient’s dialysis prescription. Here are a couple of websites that describe how the dialysis machine works.