Haemodialysis : For Haemodialysis, two needles are inserted into the patient’s arm. One needle withdraws the blood and the other returns the filtered blood to the patient’s body.

The blood, which is withdrawn by the first needle, travels outside the body through the tubing and the dialysis machine then pumps this blood through a filter called a dialyzer, which is attached to the dialysis machine. The dialyzer cleans the blood and it is returned to the patient’s body through the other needle.

The dialyzer is also called an artificial kidney because it is an artificial replacement for the patient’s damaged kidneys. During the process of haemodialysis, the haemodialysis machine circulates the dialysate (fluid with chemicals that helps to remove wastes from the body) to the artificial kidney. Haemodialysis is typically performed at a dialysis center.