Edwards HemoSphere

199
HemoSphere Advanced Monitor C Equations for Calculated Patient Parameters
Ea
dyn
Dynamic Arterial Elastance
Ea
dyn
= PPV/SVV
where:
SVV – Stroke Volume Variation,%:
PPV – Pulse Pressure Variation, calculated as:
PPV= 1 OO*(PPmax-PPmin)/mean(PP)
where:
PP – Pulse Pressure, mmHg calculated as:
PP=SYS - DIA
where:
SYS – systolic pressure
DIA – diastolic pressure
none
EDV End Diastolic Volume
EDV = SV/EF
where:
SV – Stroke Volume (mL)
EF – Ejection Fraction, % (efu)
mL
EDVI End Diastolic Volume Index
EDVI = SVI/EF
where:
SVI – Stroke Volume Index (mL/m
2
)
EF – Ejection Fraction, % (efu)
mL/m
2
ESV End Systolic Volume
ESV = EDV – SV
where:
EDV – End Diastolic Volume (mL)
SV – Stroke Volume (mL)
mL
ESVI End Systolic Volume Index
ESVI = EDVI – SVI
where:
EDVI – End Diastolic Volume Index(mL/m
2
)
SVI – Stroke Volume Index (mL/m
2
)
mL/m
2
LVSWI Left Ventricular Stroke Work Index
LVSWI = SVI x (MAP – PAWP) x 0.0136
LVSWI = SVI x (MAP
SI
– PAWP
SI
) x 0.0136 x 7.5
where:
SVI – Stroke Volume Index, ml/beat/m
2
MAP – Mean Arterial Pressure, mmHg
MAP
SI
– Mean Arterial Pressure, kPa
PAWP – Pulmonary Artery Wedge Pressure, mmHg
PAWP
SI
– Pulmonary Artery Wedge Pressure, kPa
g-m/m
2
/beat
O
2
EI Oxygen Extraction Index
O
2
EI = {(SaO
2
- SvO
2
) / SaO
2
} x100 (%)
where:
SaO
2
– Arterial O2 Saturation, %
SvO
2
– Mixed Venous O
2
Saturation, %
%
Table C-1 Cardiac and oxygenation profile equations (continued)
Parameter Description and formula Units
Status = Released Printed Date: 2018-01-16 Released Date: 2017-09-14