An in vivo analysis of reverse ultrafiltration during high-flux and high-efficiency dialysis.
We have developed an in vivo pressure monitoring system to study the phenomenon of reverse ultrafiltration of dialysate during high-flux and high-efficiency dialysis. Under the usual operating conditions of either type of dialysis, driving pressures existed for reverse ultrafiltration of dialysate into the venous end of the blood compartment. Whether or not reverse ultrafiltration could be abolished at higher ultrafiltration rates was dialyzer-dependent, being least with high-efficiency dialysis. In addition, the degree of reverse ultrafiltration was affected by patients hematocrit, dialyzer inlet and outlet oncotic pressures, and the rate and direction of dialysate flow.
Hyver
S W
SW
Division of Nephrology, Stanford University, CA.
Petersen
J
J
Cajias
J
J
D004867:Equipment Design; D015312:Hemodialysis Solutions; D006440:Hemofiltration / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D011312:Pressure; D006435:Renal Dialysis / Q000295:instrumentation* / Q000379:methods; D014462:Ultrafiltration
D015312:Hemodialysis Solutions