BSIP LECA / SCIENCE PHOTO LIBRARY BSIP LECA / SCIENCE PHOTO LIBRARY
Haemodialysis. A nurse helps an elderly man insert a cannula (a type of plastic tube) into a blood vessel in his arm prior to haemodialysis. The cannula will allow the man's blood to be run through an artificial kidney mach- ine where a special filter will remove waste prod- ucts and excess water. Haemodialysis is needed when the kidneys fail to do their natural job of removing waste, toxins and excess water from the blood. It takes 2-6 hours and is carried out seve- ral times a week. Because dialysis causes long- term complications, such as anaemia, infections & weakening of the bones, a better treatment for chronic kidney failure is transplant surgery.
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