why the blood taken from the human artey is kept at 0 degree celsius in the process of haemodialysis?

Answer 1

Your information is not correct.

It is fatal if body temperature falls too much. Thus, the fluid in a dialysis machine that removes the wastes is actually heated. The old way of doing it was to heat it to just about body temperature. This can cause the patient to heat up though, and can trigger dangerous falls in blood pressure.

I think the more current way to perform dialysis is to allow the blood temperature to fall to about 35 C during its passage through the dialysis machine. This balances the tendency for the patients temperature to rise, and helps prevent hypotension.

Also, as far as I know, dialysis is performed on blood drawn from a vein, not an artery.

Answer 2

How can it be kept at freezing?...Hemodialysis is the process of filtering your blood through a machine when you have kidney failure...freezing your blood wouldn't make sense since they're pumping it right back into you.