Dialysis fluid is hypotonic to facilitate the movement of waste products and excess electrolytes from the blood into the dialysis fluid while minimizing the loss of essential proteins and cells. A hypotonic solution has a lower concentration of solutes compared to the blood, which encourages the diffusion of toxins and urea out of the blood, helping to purify it. This osmotic gradient is crucial for effective dialysis treatment in patients with kidney failure.
because if the concentrations are different ,important or much needed substances may pass out of the blood into the tube if the concentration of that substance is low in the patients blood, so conditions of the patient can become even worst.
urine
As the dialysis fluid has no urea in it, there is a large concentration gradient - meaning that urea moves across the partially permeable membrane, from the blood to the dialysis fluid, by diffusion. This is very important as it is essential that urea is removed from the patients' blood.
urine
The dialysis fluid is different to plasmas in that it does not have the uric acid and urea in it.. besides that- it has no excess salts either.
In dialysis, chemical wastes pass from the blood into the dialysis fluid through the process of diffusion. Diffusion allows waste molecules to move from an area of higher concentration (blood) to an area of lower concentration (dialysis fluid) through a semipermeable membrane. This helps to effectively filter out waste products from the blood during dialysis treatment.
the concentration of urea should be kept low in the dialysis fluid because urea is harmful for our body if it is not removed.
Urea passes through the dialysis tubing into the dialysis fluid due to the process of diffusion, where molecules move from an area of higher concentration to an area of lower concentration. The dialysis tubing is semi-permeable, allowing small molecules like urea to cross while retaining larger molecules and cells. As urea accumulates in the blood and reaches a higher concentration than in the dialysis fluid, it diffuses out to achieve equilibrium. This process helps remove waste products from the blood in dialysis treatments.
There are two methods of dialysis in use: hemodialysis (blood dialysis) and peritoneal dialysis (dialysis in the abdominal cavity). In hemodialysis, the dialysis membrane is made up of cellophane or other synthetic material that assists in the removal of impurities from the blood by their passage through these semipermeable membranes in a fluid bath. In peritoneal dialysis, the surface area of the peritoneum acts as the membrane. Dialysis fluid is introduced into the peritoneal cavity and then periodically removed along with the waste products. This procedure may be done at intervals throughout the day or during the night.
Peritoneal dialysis in the treatment of kidney disease is the infusion of the abdomen with a special fluid. After some time the fluid is removed and refreshed by a fresh fluid. Thus the body can get rid of waste products.
Dialysis fluid is changed continuously to maintain optimal concentration gradients for effective waste removal and fluid balance. This constant renewal prevents the buildup of toxins and ensures that the dialysis process remains efficient. Additionally, it helps to regulate electrolyte levels and maintain the correct osmotic pressure, which is crucial for patient safety and treatment efficacy. Continuous fluid change also minimizes the risk of infection and complications during the dialysis process.