Facing the Reality: The World Cannot Afford Uremia Therapy at the Start of the 21st Century

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Abstract
Although remarkably successful in prolonging useful life, there is minimal probability that the majority of the world's population will benefit from contemporary therapy for irreversible renal failure because of its inordinately high cost in light of available resources. While affluent nations establish priorities for allocation of slots for maintenance dialysis of recipients of organ transplants, poor and developing countries must await the development of inexpensive, low technology treatments to substitute for absent kidney function. One attractive potential alternative to contemporary uremia therapy is the use of the intestine as a giant substitute and somewhat displaced nephron. Possible means of extracting wastes via the gut include ingestion of a mixed oral sorbent, instillation of bacterial crystallized enzymes to transform nitrogenous wastes to essential amino acids, or administration of high osmolality laxatives to promote diarrhea containing nitrogenous wastes. Any of these approaches may extract sufficient solute and water to sustain anephric life. An optimistic view of evolving uremia therapy is that within the next decade pills and purges for the poor may supplant more effective though expensive high technology approaches now encompassed in so-called modern nephrology.