Limitations of short dialysis are the indications for ultrashort daily auto dialysis.

Dialysis efficiency can be increased while shortening the duration of the treatment by the use of highly permeable dialysis membranes, larger surfaces, and higher blood and dialysate flows. However, vascular repletion of water and solutes, compared with the amount removed by rapid dialysis, is a limitation of short dialysis. This can be overcome by ultrashort daily dialyses, preferably performed by the patient alone. A safe, efficient, and user-friendly apparatus has been developed to permit Ultrashort Daily Auto Dialysis (UDAD).