Sodium Variation System; The Svs Profile Screen - Fresenius Medical Care 2008T Operator's Manual

Sodium Variation System

Note: If the SVS option is set to 'No' in Service Mode, the Sodium Variation System is not
available (software version 2.34 or later).
Physicians may prescribe additional sodium in the dialysate to assist in the prevention of
hypotension, cramping, and disequilibrium syndrome. The Sodium Variation System (SVS)
option provides the operator with an automated method of changing the concentration of
dialysate sodium in accordance with the physician's prescription.
Profile
Options
Electrolyte
Constituents
Values are based
on the
concentrate type
and Na+ level.
Constituent
Arrow
Points to the Na+
value to which the
electrolyte
constituent
corresponds
Figure 39 – The SVS Profile Screen
The Sodium Variation System (SVS) allows the standard dialysis treatment to be modified so
that the acid/acetate concentrate, which contains most of the sodium in the dialysate, is varied
according to a specific profile. There are three basic profiles available: Step, Linear, and
Exponential, or the operator may select None. In each profile, a higher level of sodium (Start
Na+) is set initially. By the end of SVS operation, the sodium level is back to the Base level.
Selecting None maintains the sodium at the Base level through the course of the treatment.
The default profile is None.
The following table describes the buttons on the "SVS" subscreen that facilitates the
implementation of the SVS.
Note: The constituents concentration is recalculated each time the  or  (up or down)
arrow key is pressed. If the Na
only recalculated after the CONFIRM key is pressed or a parameter button is selected for a
different parameter.
2008T Machine Operator's Manual P/N 490122 Rev N
Chapter 3—Setting Treatment Parameters
No values
correspond to
marks on the graph
displayed here and in the SVS
Profile button in the "Home"
+
or Bicarbonate level is entered with a numeric key, they are
SVS Profile
Graph
View of
selected SVS
The selected profile is
screen when confirmed.
Profile
83