May 1, 1977

Comparison of repeated use of capillary dialysators model C-DAK 4 and C-DAK 5

Zeitschrift für Urologie und Nephrologie
N OttoU Schmidt

Abstract

18 dialysators C-DAK 5 and 4 each were again used in the same patients with chronic dialysis under the same conditions of dialysis and regeneration (short-acting dialyses of more than 3.5 h with 1 C-DAK 5 or 2 parallel acting C-DAK 4, respectively). A volume of the blood compartment of more than 70% of the initial value was regarded as criterion for the further usability. Thus, model 5 could be used on an average 3.7 times, model 4, however, 6.3 times (p less than 0.0001). Already at the end of the 3rd use in model 5 the capillary volume decreased below 63%, in model 4 only below 88%. The volumetrically determined ultrafiltration showed a decrease parallel to the volume of the blood compartment -- with the same differences between the two models of the C-DAK. In model 15 the effectiveness concerning the elimination of creatinine and urea clearly decreased after the 2nd use, whereas it did not reveal a change also in an application four times repeated. The larger coagulation processes in a more than once repeated use of the C-DAK 5 -- with adequate losses of blood -- are explained with the large length of the capillary and the other distribution of blood with regard to the cross section of the capillary. Summarizing we can say t...Continue Reading

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Mentioned in this Paper

Hemodialysis
Carmol
Kidney Failure, Chronic
Ultrafiltration
Krebiozen
Renal Dialysis Machine

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