What does renal dialysis mean?

Nephrodialysis fistula is to establish arteriovenous fistula through simple surgery, why to establish arteriovenous fistula? In order to prepare for dialysis. Dialysis is equivalent to artificial kidney, that is, the human body's blood is extracted after filtration by dialysis machine, filtering impurities out of the body, and the rest of the good things are then infused into the human body through the machine. If you want to achieve good dialysis, you must use sufficient blood flow. only sufficient blood flow can achieve good dialysis results and ensure the discharge of impurities. Normal human blood vessels are relatively thin. After fistula, the arteries, especially the arteries and veins on the arms, can reach a certain blood flow, so as to provide some preparation for normal dialysis.