Mindray DC-8 EXP User Manual

6-20 Cardiology
Tools Descriptions Formulae
SV(Simpson BP) Stroke Volume
See table in “6.4.3.1 Left
Ventricular Function”
CO(Simpson BP) Cardiac Output
EF(Simpson BP) Ejection Fraction
SI(Simpson BP) SV Index
CI(Simpson BP) CO Index
*1 means:
{}
))()((
20
)(),(
)(EDV
20
1
42
42
∑
=
×××
i
ii
ii
cmrcmr
cmLVLdcmLVLdMAX
ml π ＝
*2 means:
{}
))()((
20
)(),(
)(ESV
20
1
42
42
∑
=
×××
i
ii
ii
cmrcmr
cmLVLscmLVLsMAX
ml π ＝
Calculate the LV volume on the apical 2-chamber view image:
∑
=
××
20
1
2
2
2
)(
20
)(
＝)(2EDV
i
i
i
cmr
cmLVLd
ml π
∑
=
××
20
1
2
2
2
)(
20
)(
)(2ESV
i
i
i
cmr
cmLVLs
ml π ＝
Calculate the LV volume on the apical 4-chamber view image:
∑
=
××
20
1
2
4
4
)(
20
)(
)(4EDV
i
i
i
cmr
cmLVLd
ml π ＝
∑
=
××
20
1
2
4
4
)(
20
)(
)(4ESV
i
i
i
cmr
cmLVLs
ml π ＝
Where,
i
LVLd
2
– Left ventricular long-axis length at end diastole at apical two-chamber view, which is
the long-axis length obtained by EDV(A2C) measurement
i
LVLd
4
– Left ventricular long-axis length at end diastole at apical four-chamber view, which is
the long-axis length obtained by EDV(A4C) measurement
i
LVLs
2
– Left ventricular long-axis length at end systole at apical two-chamber view, which is
the long-axis length obtained by ESV(A2C) measurement
i
LVLs
4
– Left ventricular long-axis length at end systole at apical four-chamber view, which is
the long-axis length obtained by ESV(A4C) measurement
i
r
2
– Radiuses obtained by EDV(A2C) or ESV(A2C) at apical two-chamber view
i
r
4
– Radiuses obtained by EDV(A4C) or ESV(A4C) at apical four-chamber view
CAUTION:
When using Simpson BP to measure LV function, be sure to keep
the apical four-chamber view and apical two-chamber view
perpendicular. Otherwise the measurement result will be incorrect.
 Operating Procedures
1. Select [Simpson BP] in the measurement menu.

Mindray DC-8 EXP Specifications

General

Brand	Mindray
Model	DC-8 EXP
Category	Medical Equipment
Language	English