Haemodialysis and Dialysis
Haemodialysis and Dialysis
Kidney failure and the Survival Kit - Haemodialysis:
The kidneys may be damaged due to infection, injury, diabetes, and extremes of blood pressure. A damaged kidney cannot function efficiently to remove urea, ions, water, etc., from the blood. This malfunctioning results in the accumulation of toxic wastes like urea (uraemia), which can lead to death. One of the ways to treat kidney failure is to use a ‘dialysis machine’ that acts as an artificial kidney.
Procedure :
It has a long tube like structure made of Cellophane suspended in a tank (dialyser) of a fresh dialysis fluid (dialysate). The Cellophane tube is partially permeable and therefore allows solutes to diffuse through. During dialysis, the blood of the patient is withdrawn from an artery and cooled at 0°C. It is maintained in a liquid state by adding an anticoagulant and by other special treatments. It is pumped through the dialysis machine. Here, the nitrogenous waste products from the blood diffuse into the dialysis fluid. The purified blood is then warmed to the body temperature and pumped back into the patient’s body through a vein.
During dialyses the artificial kidney maintains the balance of ___________ and __________________ salts in a patient whose kidneys have failed. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct ? (a) Dialysis through an artificial kidney has to be carried out at frequent intervals. This process of purification of blood is called haemo dialysis. (b) A dialysis machine works like a kidney except that no selective re absorption takes place in the case of kidney (c) An artificial kidney helps remove harmful wastes, extra salts and water .
| |||
| Right Option : D | |||
| View Explanation | |||
The process of purification of blood in which dialysis through an artificial kidney has to be carried out at frequent intervals is called _________________ . | |||
| Right Option : B | |||
| View Explanation | |||
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