What is dialysis why is it done describe the process 0?
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Answer :
As we know that Kidneys are most vital organs for survival of the organisms. Through the kidneys remain active through out the life, its efficiency gradually declines with normal ageing process. For example, its activity declines to about 50% by the age of 70 in human beings.
The other causes of decline in the normal functioning in kidney are diseases such as kidney infection, injury or restricted blood flow to kidneys. These abnormalities result in kidney damage and malfunctioning. A general term for decline in the performance of kidney due to a disease is Kidney failure. Through it is not common, it may result to death within a couple of week if not treated properly. Kidney failure is often due to build up of potassium ions which causes heart failure.
The failure of both kidney immediately need medical intervention.There are two alternatives of kidney failure (i) A matching kidney from a healthy person may be transplanted, or (ii) An 'artificial kidney' machine may be employed in order to get rid of metabolic wastes from the blood and to maintain normal level of waters and mineral ions in body fluids. The artificial kidney functions on the same principal as the normal kidney and the procedure is called Dialysis.
The blood is pumped out of the body and made to flow into the dialysis machine. Heparin is added to the blood to prevent clotting. The blood circulates slowly through the long cellulose tubes coiled in a tank filled with dialysing solution. The cellulose membrane allows ions, very small molecules and water to diffuse through it. The blood corpuscles, platelets and protein molecules are too large and do not pass through the membrane. Finally the cleansed blood is pumped back into patient.