Dialysis And Kidneys Flashcards
How are the gradients maintained in dialysis?
The constant flow of fluid in the opposite direction of the blood.
What is the dialysis fluid made up of?
The same concentration of mineral ions and glucose as the blood so there is no net movement of useful ions or glucose. Because the dialysis fluid contains normal plasma levels of mineral ions, any excess ions are moved out by diffusion. It also contains no urea which provides a steep gradient from the blood to the fluid- removing urea.
Disadvantages and advantages of dialysis?
Disadvantages are that you have to follow a very carefully controlled diet and spend long sessions connected to the dialysis machine. Advantages are that it keeps them alive.
How are organs rejected?
The antigens of the donor organs will be different of the recipient and the body will produce antibodies which will result in the destruction of the kidney
How is the possibility of rejection minimalised?
The donors tissue type is very similar to the recipient. Immunosuppressant drugs are prescribed for the rest of their lives,
