Chronic renal failure is kidney damage caused by various reasons progress in the performance deterioration of end-stage renal function close to the normal 10% or so, there was a series syndrome generally have relatively long duration.
The vast majority of patients with chronic renal failure, dialysis treatment is carried out. Dialysis is that it is a blood purification technology. Especially hemodialysis dialysis treatment, patients will rely on hospital dialysis equipment. Typically, patients must be every 2-3 days to the hospital for a dialysis, dialysis time to spend 3-4 hours, it also greatly reduces the quality of life of patients with chronic renal failure.
Hemodialysis membranes balance principle is based on the patient's blood through a kind of film many small holes, these holes can allow molecules to pass through it is smaller than, the diameter is larger than the membrane pore molecules are prevented from leaving, and the semi-permeable membrane and chemical composition containing dialysate will certainly touch. Dialysis, the patient's blood stream composed of half a small gap membrane, the dialysis fluid flow in the trailer bucket, red blood cells, white blood cells and proteins and other large particles can not be holes through the semi-permeable membrane; the water, electrolyte and metabolite in the blood, such as urea, creatinine, guanidine and other small substances can diffuse through the semipermeable membrane into the dialysis solution; the dialysis fluid substances such as bicarbonate or acetate, etc. can also diffuse into the blood, to remove harmful substances, complement The purpose of the body of material required.
