Step 1:
Estimate Oxygen Consuption (VO2):
Enter the following for VO2 estimation:
height (cm)
weight (kg)
age (yrs)
heart rate (bpm)
Choose Gender:
Then click Calculate to Estimate VO2.
Estimated VO2:
(ml/min)
Measured VO2:
(ml/min)
(If this box is filled, the value will be used in calculations.
If left blank, the estimated VO2 will be used instead)
Body Surface Area (BSA):
Calculated BSA: (m^{2})
(please enter height and weight above)
Indexed VO2:
(ml/min/m2)
Examples: (select and click Calculate)
normal circulation
left to right shunt
right to left shunt
bidirectional shunt
CLEAR FORM

Step 2:
Enter Saturation and Partial Pressure:
Saturation  PO_{2}
(%)
(mmHg) in SVC
(%)
(mmHg) in IVC
(%)
(mmHg) in PA
(%)
(mmHg) in PV
(%)
(mmHg) in Ao
To Convert: (kPa x 7.5 = mmHg)
Hgb (g/dl). Note:
Effect of O2 is larger when the Hgb is LOW.
Step 3: Mixed Venous Oxygen:
Resulting MV: (%)
(mmHg)
(MV PO_{2} is calculated by the same method)
Step 4:
Pressures (for resistance only)
mean RA (mmHg)
mean PA (mmHg)
mean LA (mmHg)
mean Ao (mmHg)
Step 5:
Clear Form
Back to Main Form

RESULTS
Flows (Q):
Qpulmonic (L/min)
Qsystemic (L/min)
Qef (L/min)
Shunts:
R>L shunt (L/min)
L>R shunt (L/min)
Qp/Qs ratio
Systemic shunt fraction
Pulmonic shunt fraction
Cardiac Index (CI):
Pulmonic CI (L/min/m^{2})
Systemic CI (L/min/m^{2})
Effective CI (L/min/m^{2})
Resistance (PVR/SVR):
PVR (wood units,
indexed=
um2)
PVR (dynes/sec/cm^{5})
SVR (wood units,
indexed=
um2)
SVR (dynes/sec/cm^{5})
Stroke Volume/Index (SVI):(Will only calculate if shunt volume is less than 0.5 L/min)
Pulmonic:(ml/beat)
(ml/beat/m^{2})
Systemic:(ml/beat)
(ml/beat/m^{2})
