User Manual Manual

88 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