Calculations – Welch Allyn 1500 Patient Monitor v.1.4.X - User Manual User Manual
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Monitoring and Measurements
Welch Allyn 1500 Patient Monitor
Calculations
Parameter
Units
Description
Time
Time when the calculations were made
BSA
m
2
Body surface area in m
2
calculated as follows:
•
BSA = ([Height(cm) x Weight(kg)] / 3600 )
½
SV
ml
Stroke volume (milliliters / stroke):
•
SV = (C0*1000) / HR
SVR
dyne-sec/cm
5
Systemic Vascular Resistance (SVR). Represents the load applied to the left
ventricular muscle during ejection.
•
SRV = (ARTm - CVPm) * 80 / CO
PVR
dyne-sec/cm
5
Pulmonary vascular resistance (PVR):
•
PRV = (PAm - PAWP) * 80 / CO
LCW
kg-m
Left cardiac work:
•
LCW = CO * (ARTm - PAWP) * 0.0136
LVSW
gm-m
Left ventricular stroke work:
•
LVSW = SV * (ARTm - PAWP) * 0.0136
RCW
kg-m
Right Cardiac Work:
•
LVSW = SV * (ARTm - PAWP) * 0.0136
RVSW
gm-m
Right Ventricular Stroke Work:
•
RVSW = SV * (PAm - CVPm) * 0.0136
CI
l/min/m
2
Cardiac Index:
•
CI = CO / BSA
SVI
ml/m
2
Stroke Volume Index:
•
SVI = SV / BSA