Why is a pump needed in kidney dialysis?

A pump is essential in kidney dialysis to circulate blood through the dialysis machine, ensuring efficient removal of waste products and excess fluids from the bloodstream. It maintains a steady flow rate, which is crucial for optimal filtration and treatment. Additionally, the pump helps control the timing and pressure within the dialysis system, enhancing the overall effectiveness of the procedure. Without a pump, the process would be less effective and could lead to complications.