The Bv (Blood Volume) Graph - Fresenius Medical Care 2008T Operator's Manual

Chapter 4—Monitoring the Treatment
Feature

The BV (Blood Volume) graph

The BV (Blood Volume) graph (Figure 54 on page 119) is displayed as a fill graph. A line is
filled from 0 to the ΔBV% value. As the dialysis treatment progresses, fluid is taken out of
the blood by the 2008T hemodialysis machine's ultrafiltration pump. This will result in a
greater percentage of the blood being red blood cells and the blood volume fill graph will
trend downwards and approach the alert level. The BV alert level is drawn as a blue dotted
line across the BV graph.
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Function
Minimum Oxygen Saturation – The minimum oxygen saturation value
over all data points.
O Alert Level button – This button sets the oxygen saturation alert
2
level. When the current O
2
the alert message "Oxygen Saturation Low" is displayed in the Status
Box. The alert can be cleared by lowering the alert level or by setting
the O Alert Level to OFF.
2
To set the O Alert Level, select the O
2
the desired value using the  or  (up or down) keys or the numbers
on the keyboard and press the CONFIRM key. To turn the O
level OFF, enter "0" (zero) on the keyboard and press the CONFIRM
key.
The O Alert Level defaults to 89 and can be set from 45 to 95. Setting
2
the O Alert Level to any value 44 or lower turns the O
2
OFF. The O Alert Level is drawn as a green dotted line across the
2
Oxygen Saturation graph.
Markers button – Selecting this button displays a menu to insert an
event marker on the BV (or Hct) and O
(up or down) keys on the keyboard to select either 'Symptom' or
'Intervention'. Pressing the CONFIRM key places the marker and the
current ∆BV%, Hct, and oxygen saturation values on the latest point
on the graph; pressing the Escape key exits the menu without placing
a marker.

The Symptom marker is displayed as a yellow diamond

The Intervention marker is displayed as a black triangle
Note: Markers can only be set when the Tx Clock is running and the
CLiC device is not disabled. Resizing the graph may cause markers to
rotate in order to better fit the space depending on the limits. If there is
not enough space between markers, the machine will not place a
marker in order to prevent overlap.
Print button – When RTD is zero and the Tx Clock is paused, a Print
button will appear on the "Crit-Line" screen in place of the Markers
button (see above).
To clear the data on the "Crit-Line" screen without printing, press the
New Tx key.
2008T Machine Operator's Manual P/N 490122 Rev N
Sat value drops below the O
Alert Level button and enter
2
Sat graphs. Use the  or 
2
Alert Level,
2
Alert
2
Alert Level
2