Qualified medical treatments abroad
Hemodialysis
from
Wikipedia, the free encyclopaedia
There are two main types of dialysis, hemodialysis and peritoneal dialysis. Hemofiltration is not strictly speaking a dialysis treatment, but is extremely similar.
In hemodialysis, the patient's blood is passed through a system of tubing (a dialysis circuit) via a machine to a semipermeable membrane (dialyser) which has dialysis fluid running on the other side. The cleansed blood is then returned via the circuit back to the body. Ultrafiltration occurs by increasing the hydrostatic pressure of the blood in the dialysis circuit to cause water to cross the membrane down a pressure gradient. The dialysis process is very efficient, allowing the treatment to be undertaken intermittently, usually three times a week, but often fairly large volumes of fluid must be removed in a session which can sometimes be demanding on the patient.
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