Mindray BeneVision N22 - Calculated Parameters and Formulas for Hemodynamic Calculations

BeneVision N22/N19 Patient Monitor Operator’s Manual 33 - 5
33.4.3 Calculated Parameters and Formulas for Hemodynamic Calculations
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)
systemic vascular
resistance index
SVRI DS•m
2
/cm
5
SVRI (DS•m
2
/cm
5
) = SVR (DS/cm
5
) × BSA (m
2
)
pulmonary vascular
resistance
PVR DS/cm
5
P VR (DS/cm
5
) = 79.96 × [PAMAP (mmHg) -
PAWP (mmHg)]/C.O. (L/min)
pulmonary vascular
resistance index
PVRI DS•m
2
/cm
5
PVRI (DS•m
2
/cm
5
) = PVR (DS/cm
5
)× BSA (m
2
)
left cardiac work LCW kg•m LCW (kg•m) = 0.0136 × APMAP (mmHg) × C.O.
(L/min)
left cardiac work index LCWI kg•m/m
2
LCWI (kg•m/m
2
) = LCW (kg•m)/BSA (m
2
)
left ventricular stroke
work
LVSW g•m LVSW (g•m) = 0.0136 × APMAP (mmHg) × SV
(ml)
left ventricular stroke
work index
LVSWI g•m/m
2
LVSWI (g•m/m
2
) = LVSW (g.m)/BSA (m
2
)
right cardiac work RCW kg•m R CW (kg•m) = 0.0136 × PAMAP (mmHg) × C.O.
(L/min)
right cardiac work index RCWI kg•m/m
2
R CWI (kg•m/m
2
) = RCW (kg.m)/BSA (m
2
)
right ventricular stroke
work
RVSW g•m R VSW (g•m) = 0.0136 × PAMAP (mmHg) × SV
(ml)
right ventricular stroke
work index
RVSWI g•m/m
2
R VSWI (g•m/m
2
) = RVSW (g•m)/BSA (m
2
)
ejection fraction EF % EF (%) = 100 × SV (ml)/EDV (ml)
End-diastolic volume
index
EDVI ml/m2 EDVI (ml/m
2
) = EDV (ml)/BSA (m
2
)
End-systolic Volume ESV ml ESV (ml) = EDV (ml) –SV (ml)
End-systolic Volume index ESVI ml/m
2
ESVI (ml/m
2
) = ESV (ml)/BSA (m
2
)