Hemofiltration and hemodialysis are two different types of dialysis, and the main differences include the mechanism, removal of toxins and so on.
1. Mechanism: hemofiltration is mainly convective, i.e., the patient’s blood is infused with replacement fluid, and at the same time, negative pressure is added on the side of the dialysis fluid, so that the replacement fluid will pass through the dialysis membrane from one side of the blood to the other side of the dialysis fluid; hemodialysis is mainly diffusive, with a semi-permeable membrane separating the patient’s blood and the dialysis fluid, and utilizing the difference in substance concentration on the two sides of the dialysis membrane to carry out the process.
2. Removal of toxins: hemodialysis mainly removes small molecule toxins and water; hemofiltration removes some medium and large molecule toxins in addition to small molecule toxins.
Hemodialysis patients should go to the hospital for dialysis regularly and choose the appropriate dialysis program under the guidance of dialysis physicians.