S12 Vet Monitor User’s Manual
18-11
Output
Parameter
Unit Full Name Formula
Vd mL
volume of
physiological dead
space
Vd=【( PaCO2－PeCO2) ×TV】
/PaCO2
Vd/Vt %
physiologic dead
space in percent of
tidal volume
Vd/Vt= (PaCO2－PeCO2)/
PaCO2×100%
VA L/min alveolar volume
VA=(TV－Vd) ×RR
18.7. Nephridium Calculation
The monitor provides the nephridium calculation function. The monitor can save the
results of up to 20 calculations, which are displayed in groups.
18.7.1. Calculation Step
1. Access nephridium calculation page by either of the following ways:
Select【Calculations】quick key→【Nephridium】submenu.
Select【Main Menu】quick key→from 【Calculations】 column to
select 【Nephridium】.
2. Enter the correct value for each parameter. For a patient who is being
monitored, the currently measured values are automatically taken, and the
height and weight are derived from the patient information entered.
3. Select 【Calculate】 to calculate the value of each output parameter. The
calculated value is greater than the normal upper limit is indicated by an up
arrow “↑”; the calculated value is lower than the normal lower limit is
indicated by a down arrow “↓”.
Select 【Range】 to show the normal range of each parameter.
Select 【Unit】 to show the unit of each parameter.
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