An evaluation of twelve nested models of transperitoneal transport of urea: the one-compartment assumption is valid
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
An evaluation of twelve nested models of transperitoneal transport of urea : the one-compartment assumption is valid. / Graff, J; Fugleberg, S; Joffe, P; Brahm, J; Fogh-Andersen, N.
I: Scandinavian Journal of Clinical & Laboratory Investigation, Bind 55, Nr. 4, 07.1995, s. 331-9.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - An evaluation of twelve nested models of transperitoneal transport of urea
T2 - the one-compartment assumption is valid
AU - Graff, J
AU - Fugleberg, S
AU - Joffe, P
AU - Brahm, J
AU - Fogh-Andersen, N
PY - 1995/7
Y1 - 1995/7
N2 - Models of transperitoneal urea transport are generally based on the one-compartment assumption, i.e. that the plasma water urea concentration in the peritoneal capillary bed is equal to the plasma water urea concentration in the peripheral veins. The aim of this study was to investigate the mechanism(s) of transperitoneal urea transport and to test the one-compartment assumption for urea. A total of 12 nested models were formulated and validated on the basis of experimental results obtained from 23 non-diabetic patients undergoing peritoneal dialysis. The validation procedure demonstrated that transperitoneal transport of urea probably involves diffusion, non-lymphatic convection and lymphatic convection. It was furthermore demonstrated that the inclusion of lymphatic convection changes the mass transfer area coefficient considerably. Finally, no deviation from the one-compartment assumption was demonstrated by our results.
AB - Models of transperitoneal urea transport are generally based on the one-compartment assumption, i.e. that the plasma water urea concentration in the peritoneal capillary bed is equal to the plasma water urea concentration in the peripheral veins. The aim of this study was to investigate the mechanism(s) of transperitoneal urea transport and to test the one-compartment assumption for urea. A total of 12 nested models were formulated and validated on the basis of experimental results obtained from 23 non-diabetic patients undergoing peritoneal dialysis. The validation procedure demonstrated that transperitoneal transport of urea probably involves diffusion, non-lymphatic convection and lymphatic convection. It was furthermore demonstrated that the inclusion of lymphatic convection changes the mass transfer area coefficient considerably. Finally, no deviation from the one-compartment assumption was demonstrated by our results.
KW - Adult
KW - Aged
KW - Biological Transport
KW - Diffusion
KW - Female
KW - Humans
KW - Male
KW - Middle Aged
KW - Models, Biological
KW - Peritoneal Dialysis
KW - Peritoneum
KW - Urea
KW - Water
M3 - Journal article
C2 - 7569736
VL - 55
SP - 331
EP - 339
JO - Scandinavian Journal of Clinical & Laboratory Investigation
JF - Scandinavian Journal of Clinical & Laboratory Investigation
SN - 0036-5513
IS - 4
ER -
ID: 94518906