2015年3月1日星期日

Dialysis of Patients with Chronic Kidney Disease

Dialysis is not strange for patients with Chronic Kidney Disease and it is used to replace kidneys to play their functions. Dialysis is not a pleasant process for patients with Chronic Kidney Disease, so they should receive treatment as soon as possible when they are diagnosed with Chronic Kidney Disease.
Instead of repairing damaged kidney and restoring renal function, dialysis just helps patients have a normal life. In medical field, dialysis can be mainly divided into two types: Hemodialysis and peritoneal dialysis.
Hemodialysis equipment is also known as the popular saying artificial kidney, and hemodialysis is one of the technologies of blood purification. Hemodialysis technology is based on the principle of semipermeable membrane. Through diffusion and convection, waste products and excessive electrolyte can be removed gradually from the blood, so as to achieve the purpose of purifying blood. At the same time, the disorder of electrolyte and acid-base balance can be improved greatly.
However, not all the patients are suitable for undergoing hemodialysis. For example, Patients who can not live a long time, due to their special diseases such as malignancy, senile demential and cerebrovascular disease, are not allowed to do hemidialysis,(When Do Patients Require Hemodialysis) because their life is so limited, and it is not necessary for them to do it. Besides, patients over seventy years old or younger than four years old are not suitable for receiving hemidialysis. They had better undergo peritoneal dialysis, because, generally speaking, hemodialysis needs four to five hours to finish and it is very hard for them to keep in the bed for several hours. Then what is peritoneal dialysis? Peritoneal Dialysis for Treating Renal Disease ?
Peritoneal dialysis takes peritoneum as semi-permeable membrane. Through the action of gravity, prepared dialysate can flow into patients’ peritoneal cavity through a pipe. Therefore, there exists disparity of concentration gradient in patients’ peritoneal cavity, which will promote the movement of solute in the high concentration side to another side. By renewing dialysate continually, patients’ blood can be purified greatly.

Dialysis just is a method of helping patients who is in the end stage of Chronic Kidney Disease live in a normal life. It can not help to cure Chronic Kidney Disease. Thereby, in order to avoid dialysis, a timely treatment for patients is very important.

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