Dialysis blocks the passage of larger substances (for example, red blood cells, large proteins). This replicates the filtering process that takes place in the kidneys when the blood enters the kidneys and the larger substances are separated from the smaller ones in the glomerulus. The two main types of dialysis, hemodialysis and peritoneal dialysis, remove wastes and excess water from the blood in different ways. Hemodialysis removes wastes and water by circulating blood outside the body through an external filter, called a dialyzer, that contains a semipermeable membrane. The blood flows in one direction and the dialysate flows in the opposite.
Organ donation but there is still a waiting list for corneas."To an economist, this is a basic supply-and-demand gap with tragic consequences." Approaches to addressing this shortfall include: In hospitals, organ network representatives routinely screen patient records to identify potential donors shortly in advance of their deaths. In many cases, organ-procurement representatives will request screening tests (such as blood typing) or organ-preserving drugs (such as blood pressure drugs) to keep potential donors' organs viable until their suitability for transplants can be determined and family consent (if needed) can be obtained. This practice increases transplant efficiency, as potential donors who are unsuitable due