Hemodialysis is a replacement therapy for Renal Failure, when kidneys fail to
work effectively and waste and extra water cannot be filtrated from our bodies.
It works as an artificial kidney, but it is unable to replace all functions of
the real kidneys.
Kidneys can filtrate blood, form urine, remove excessive water, keep the
normal osmotic pressure, adjust electrolyte concentration and balance acid base,
which hemodialysis can take over from our kidneys as well, but hemodialysis
cannot secrete essential chemical elements like erythropoietin as the real
kidneys, so patients who have taken hemodialysis usually have Anemia, Hypopsia
and other like complications.
Although hemodialysis is adopted in kidney disease treatment, it is not
really curing the damaged kidneys. It just reduces the burden of the real
kidneys and helps them clean the internal environment for other effective
treatments. If the real kidneys continue being worsened, hemodialysis can not
save their lives. In other word, this treatment merely slower the disease and
prolong life span but it does not avoid complete kidney failure. Therefore, at
the stage of uremia, hemodialysis just works as the main adjuvant treatment to
provide a relative clean environment for kidney transplant, stem cell
transplantation and other effective therapies.
Compared with kidney transplant and stem cell transplantation, patients who
adopting hemodialysis must follow more strict diet, because nutriment runs off
and protein is resolved in the course of hemodialysis. Such patients should have
animal protein, high vitamin and rich cellulose but some food containing
potassium are forbidden, such as beans, edible seaweed, mushrooms, lotus seeds,
jujubes, bananas and oranges etc
However, it is still very curative for patients with End-Staged Renal Failure
to take hemodialysis which can effectively eliminate waste and extra water,
keeping enter-environment clean and making preparations for next therapies.
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