Siemens ACUSON Cypress Operator's Manual page 163

M-Mode Formulas (Cardiac)
TABLE 30.
Type Formula
Cardiac Output
CO
Cubed
SV is stroke volume cubed (ml).
HR is heart rate (bpm).
Cardiac Output
CO
Teichholz
SV is stroke volume Teichholz (ml).
HR is heart rate (bpm).
Cardiac Index
CI
Cubed
CO is Cardiac Output cubed (l/min).
BSA is Body Surface Area (m
Cardiac Index
CI
Teichholz
CO is Cardiac Output Teichholz (l/min).
BSA is Body Surface Area (m
LV Mass
LV Mass
0.8 1.04
IVSd is interventricular septum diastole (cm).
LVIDd is left ventricular internal diameter diastole (cm).
LVPWd is left ventricular posterior wall diastole (cm).
LV Mass Index
LVMI
(LVMI)
LV Mass (g).
BSA is Body Surface Area (m
Body Surface
BSA
Area
(BSA)
W is weight (kg) (range: 0.5—160.0 kg).
H is height (cm) (range: 15.0—204.0 cm).
ACUSON Cypress™ Operator's Manual
( • )
SV HR
= ------------------------- -
1000
( • )
SV HR
= ------------------------- -
1000
CO
= ---------- -
BSA
CO
= ---------- -
BSA
=
( ) IVSd ( (
+ LVIDd +
LV Mass
= ---------------------- -
BSA
0.425
(
= 0.007184 W H
kg
Cardiac Formulas and References
2
).
2
).
3 3
) )
LVPWd – LVIDd +
2
).
0.725
)
cm
Units
l/min
l/min
2
l/min/m
2
l/min/m
g
0.6
2
g/m
2
m
6-19