Kidney transplantation or renal transplantation is the organ transplant of a kidney into a patient with end-stage renal disease. Kidney transplantation is typically classified as deceased-donor (formerly known as cadaveric) or living-donor transplantation depending on the source of the donor organ.
How the kidneys work
The kidneys have several important functions in the body.
They filter wastes from your bloodstream and maintain the balance ofelectrolytes in your body.
They remove chemical and drug by-products and toxins from your blood.
They eliminate these substances and excess water as urine.
They secrete hormones that regulate the absorption of calcium from your food (and thus bone strength), the production of red blood cells (thus preventinganemia), and the amount of fluid in your circulatory system (and thus blood pressure).
When blood enters the kidneys, it is first filtered through structures calledglomeruli. The second step is filtering through a series of tubules called nephrons.
The tubules both remove unwanted substances and reabsorb useful substances back into the blood.
Each of your kidneys contains several million nephrons, which cannot be restored if they are damaged.
Liver transplant
Liver transplantation or hepatic transplantation is the replacement of a diseased liver with a healthy liver from another person (allograft). The most commonly used technique is orthotopic transplantation, in which the native liver is removed and replaced by the donor organ in the same anatomic location as the original liver.
Risks
Liver transplant surgery and management after surgery carry major risks. There is an increased risk of infection because you must take medications that suppress the immune system to prevent transplant rejection. Signs of infection include: