title: Ultrafiltration and high sodium concentration dialysis: pathophysiological correlation.
abstract: Five stabilised uraemic patients underwent two different procedures using the Gambro Ultradiffuser: ultrafiltration alone for one hour (mean body weight loss 2.97 +/- 0.24 kg) and ultrafiltration with simultaneous dialysis for one hour (mean body weight loss 2.92 +/- 0.22 kg) using a given dialysate sodium concentration which reproduced the changes in osmolality which occur during ultrafiltration alone. This mean sodium concentration was 154.75 +/- 2.02 mEq/L. The results did not show significant differences for the two procedures as regards tolerance to dehydration. These results underline the key role of osmolar stability in making dehydration tolerable.
mesh_terms: D001794:Blood Pressure; D006801:Humans; D009994:Osmolar Concentration; D011674:Pulse; D006435:Renal Dialysis; D014462:Ultrafiltration; D014511:Uremia / Q000503:physiopathology / Q000628:therapy; D014882:Water-Electrolyte Balance