Biomaterial Database

Modular single-needle haemodialysis; ultrafiltration characteristics. 1978

A G Hocken

In vitro and in vivo work has been carried out examining a modular single-needle system for fistula haemodialysis. Ultrafiltration characteristics of the single-needle system are defined and conclusions upon flow patterns are reached. Applying the mean blood pressure formula to the extracorporeal system pressures, the transmembrane pressure can be calculated and the ultrafiltration rate forecast. High transmembrane pressures can be modified, with sacrifice of blood flow, by amendment of the blood flow phase durations.

UI	MeSH Term	Description	Entries
D009339	Needles	Sharp instruments used for puncturing or suturing.	Hypodermic Needles,Hypodermic Needle,Needle,Needle, Hypodermic,Needles, Hypodermic
D006435	Renal Dialysis	Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.	Dialysis, Extracorporeal,Dialysis, Renal,Extracorporeal Dialysis,Hemodialysis,Dialyses, Extracorporeal,Dialyses, Renal,Extracorporeal Dialyses,Hemodialyses,Renal Dialyses
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014462	Ultrafiltration	The separation of particles from a suspension by passage through a filter with very fine pores. In ultrafiltration the separation is accomplished by convective transport; in DIALYSIS separation relies instead upon differential diffusion. Ultrafiltration occurs naturally and is a laboratory procedure. Artificial ultrafiltration of the blood is referred to as HEMOFILTRATION or HEMODIAFILTRATION (if combined with HEMODIALYSIS).