In dialysis for kidney failure patients, the dialysing fluid is iso-osmotic to
Blood
Urine
Water
Body fluid
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CISF-AC-EXE – 2018
– The dialysing fluid, or dialysate, is a sterile solution that is separated from the patient’s blood by a semi-permeable membrane (the dialyser or peritoneum).
– The dialysate is carefully formulated to have an osmotic pressure similar to that of normal blood plasma (making it iso-osmotic to blood) to prevent damage to blood cells and large shifts in fluid balance.
– Waste products like urea and creatinine, which are in high concentration in the patient’s blood, diffuse across the membrane into the dialysate where their concentration is low.
– Excess electrolytes in the blood can also be removed, and necessary electrolytes added to the blood from the dialysate, facilitating balance.
– Water removal (ultrafiltration) is typically achieved by creating a pressure gradient or sometimes by adding glucose to the dialysate to increase its osmotic pressure slightly compared to blood, but the base solution is iso-osmotic.