Edwards HemoSphere

202
HemoSphere Advanced Monitor C Equations for Calculated Patient Parameters
VO
2
Ie Estimated Oxygen Consumption Index
VO
2
e/ BSA
mL O
2
/min/m
2
VQI Ventilation Perfusion Index
{1.38 x HGB x (1.0 - (SaO
2
/100))+ (0.0031 x PAO
2
)}
VQI = ------------------------------------------------------------------ x 100
{1.38 x HGB x (1.0 - (SvO
2
/100))+ (0.0031 x PAO
2
)}
{1.38 x HGB
SI
x 1.611344 x (1.0 - (SaO
2
/100)) + (0.0031 x PAO
2
)}
VQI = ----------------------------------------------------------------------------------- x 100
{1.38 x HGB
SI
x 1.611344 x (1.0 - (SvO
2
/100)) + (0.0031 x PAO
2
)}
where:
HGB – Total Hemoglobin, g/dl
HGB
SI
– Total Hemoglobin, mmol/l
SaO
2
– Arterial O
2
Saturation, %
SvO
2
– Mixed Venous O
2
Saturation, %
PAO
2
– Alveolar O
2
Tension, mmHg
and:
PAO
2
= ( (PBAR - PH
2
0) x FiO
2
) - PaCO
2
x (FiO
2
+(1.0 - FiO
2
)/0.8)
where:
FiO
2
– Fraction of Inspired Oxygen
PBAR – 760 mmHg
PH
2
O – 47 mmHg
PaCO
2
– 40 mmHg
%
Table C-1 Cardiac and oxygenation profile equations (continued)
Parameter Description and formula Units
Status = Released Printed Date: 2018-01-16 Released Date: 2017-09-14