Fresenius Medical Care 5008, Service Manual

Page: 61 / 168

Chapter 5: Setup
Fresenius Medical Care 5008 SM 1/08.04 5-21
5.3 Information Regarding the Setting of Concentrates in the
Technician’s Setup
The following setting limits must be observed in the technician’s menu
for the specification of the concentrates:
O
Explanation of the terms used in the Settings menu
Na
+
(sodium),
K
+
(potassium),
Ca
2+
(calcium),
Mg
2+
(magnesium),
C
-
(chloride),
HCO3
-
(bicarbonate)
Is the concentration of the respective ions in the ready-to-use dialysate.
NaB Is the concentration of the sodium in the ready-to-use dialysate which
originates from the bicarbonate concentrate. If the bicarbonate
concentrate does not contain any additional saline, this value equals the
total of the values for bicarbonate and acid (acid is most cases identical
with the acetate)
If the bicarbonate concentrate contains additional saline, the value for
NaB equals the total of the final concentration of this saline in the ready-
to-use dialysate, the bicarbonate and the acid.
If the value set for NaB is zero it is assumed that the concentrate is pure
bicarbonate concentrate, the software will set NaB = HCO3
-
CH
3
COO
-
Acetate, is the concentrate of the acetate in the ready-to-use dialysate.
In case of bicarbonate dialysis :
If the value set here is zero, it is assumed that the prescription contains
hydrochloric acid (HCl).
Acid CH
3
COOH or HCl, is the concentration of the acid which originates from
the acidic or sodium concentrate (prior to the reaction with the
bicarbonate component), in case of bicarbonate dialysis it is in most
cases identical with the acetate. If the value set here is zero, it is
assumed that it is identical with acetate, i.e. that the acetate of the
ready-to-use dialysate is produced by the reaction of the acetic acid of
the acid concentrate with the bicarbonate and that the concentrates did
not contain any acetate prior to this reaction. This is the normal case.
Acetic acid and hydrochloric acid are considered as acid.
Glucose Is the concentration of the glucose in the ready-to-use dialysate.
Caution: The unit of measure is g/L
O
Mixing ratio
Acid proportion Proportion of the acidic concentrate of the composition, is the reference
quantity of the mixing ratio, constant = 1
Bic components Proportion of the bicarbonate concentrate of the composition. In case of
acetate dialysis the value is 0.