EDAN U60 - Page 154

U60 Diagnostic Ultrasound System User Manual Cardiac Measurements and Calculations
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HR
Heart Rate
Key in (bpm)
EDV
End Diastolic Volume
EDV (mL)= (8/3π)×{LVALd (mm
2
)}
2
/LVLd
(mm) /1000
ESV
End Systolic Volume
ESV (mL)= (8/3π)×{LVALs (mm
2
)}
2
/LVLs
(mm) /1000
SV
Stroke volume
SV (mL)=EDV (mL)-ESV (mL)
CO
Cardiac Output
CO (L/min)= SV (mL) × HR (bpm)/1000
EF
Ejection fraction (B mode)
EF (No unit)= SV (mL)/ EDV (mL) x 100%
SI
Stroke Index
SI (No unit)= SV (mL)/ BSA (m
2
)
CI
Cardiac Index
CI (No unit)= CO (L/min)/ BSA (m
2
)
BSA
Body Surface Area
Calculate by the selected formula (m
2
)
Table 9-6 Measurement and Calculation Items with Single Plane Ellipse Formula
2. Dual plane ellipse formula:
NOTE: d: end diastolic; s: end systolic
Label
Description
Method
LVALd
Left Ventricle Area of Long-axle
Ellipse Area (mm
2
, cm
2
, or dm
2
)
LVAMd
Left Ventricular Fractional Area of
Mitral Valve
LVIDd
Left Ventricle Internal Diameter
Distance (mm)
LVALs
Left Ventricle Area of Long-axle
Ellipse Area (mm
2
, cm
2
, or dm
2
)
LVAMs
Left Ventricular Fractional Area of
Mitral Valve
LVIDs
Left Ventricle Internal Diameter
Distance (mm)
HR
Heart Rate
Key in (bpm)
EDV
End Diastolic Volume
EDV(mL)=(8/3π)×LVALd(mm
2
)×LVAMd(mm
2
)/L
VIDd(mm) /1000
ESV
End Systolic Volume
ESV(mL)=(8/3π)×LVALs(mm
2
)×LVAMs(mm
2
)/LV
IDs(mm) /1000
SV
Stroke volume
SV (mL)=EDV (mL)-ESV (mL)
CO
Cardiac Output
CO (L/min)= SV (mL) × HR (bpm)/1000
EF
Ejection fraction (B mode)
EF (No unit)= SV (mL)/ EDV (mL) x 100%