BeneVision N1 Patient Monitor Operator’s Manual
18 - 3
18.4
Hemodynamic Calculations
The monitor provides the hemodynamic calculation function. The monitor can save the results of up to 10
calculations, which are displayed in groups.
18.4.1
Performing Hemodynamic Calculations
To perform hemodynamic calculation, follow this procedure:
1.
Access hemodynamic calculation by either of the following ways:
◆
Select the
Calculations
quick key
→
Hemodynamics
tab.
◆
Select the
Main Menu
quick key
→
from the
Calculations
column
select
Hemodynamics
.
2.
Enter the known values. For a patient who is being monitored, the currently measured values are
automatically taken.
3.
Select
Calculate
.
The calculated value greater than the normal upper limit is indicated by an up arrow “
↑
”. The calculated value
lower than the normal lower limit is indicated by a down arrow “
↓
”.
You can select
Range
to show the normal range of each parameter.
18.4.2
Input Parameters for Hemodynamic Calculations
NOTE
•
If you enable Use PA-D as PAWP, PA-D value will be used to replace PAWP value for hemodynamic
calculation. For more information, refer to
14.6.6 Setting the Use PA-D as PAWP Switch (only available
for the independent external display)
18.4.3
Calculated Parameters and Formulas for Hemodynamic Calculations
Input Parameter
Label
Unit
cardiac output
C.O.
L/min
heart rate
HR
bpm
pulmonary artery wedge pressure
PAWP
mmHg
artery mean pressure
PMAP
mmHg
pulmonary artery mean pressure
PA Mean
mmHg
central venous pressure
CVP
mmHg
end-diastolic volume
EDV
ml
height
Height
cm
weight
Weight
kg
Calculated Parameters
Label
Unit
Formula
cardiac index
C.I.
L/min/m
2
C.I. (L/min/m
2
) = C.O. (L/min)/BSA (m
2
)
body surface area
BSA
m
2
BSA (m
2
) = Wt
0.425
(kg) × Ht
0.725
(cm) ×
0.007184
stroke volume
SV
ml
SV (ml) = 1000× C.O. (L/min)/HR (bpm)
stroke index
SVI
ml/m
2
SVI (ml/m
2
) = SV (ml)/BSA (m
2
)
systemic vascular
resistance
SVR
DS/cm
5
SVR (DS/cm
5
) = 79.96 × [APMAP (mmHg) - CVP
(mmHg)]/C.O. (L/min)
