Welch Allyn 1500 Directions For Use Manual page 91

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