Mindray iMEC8 Vet - Calculated Parameters and Formulas; Ventilation Calculations; Performing Calculations

18-4
Abbreviation Unit Full spelling
CvO
2
ml/L venous oxygen content
VO
2
ml/min oxygen consumption
RQ None respiratory quotient
ATMP mmHg atmospheric pressure
Height cm height
Weight kg weight
18.3.3 Calculated Parameters and Formulas
Abbreviation Unit Full spelling Formula
BSA m
2
body surface area Wt
0.425
× Ht
0.725
× 0.007184
C(a-v)O
2
ml/L
arteriovenous oxygen content
difference
CaO
2
－ CvO
2
O
2
ER % oxygen extraction ratio 100×C(a-v)O
2
/ CaO
2
PAO
2
mmHg
partial pressure of oxygen in the
alveoli
FiO
2
/ 100 × (ATMP－47)－PaCO
2
×[ FiO
2
/100 ＋ (1
－FiO
2
/100) / RQ ]
AaDO
2
mmHg
alveolar-arterial oxygen
difference
PAO
2
－ PaO
2
CcO
2
ml/L capillary oxygen content Hb × 1.34 ＋ 0.031 × PAO
2
Qs/Qt % venous admixture
100× [1.34 × Hb × (1－SaO
2
/100) ＋ 0.031× (PAO
2
－PaO
2
)] / [1.34 × Hb × (1－SvO
2
/100) ＋ 0.031×
(PAO
2
－ PvO
2
)]
18.4 Ventilation Calculations
18.4.1 Performing Calculations
To perform a ventilation calculation:
1. Select [Main Menu]→[Calculations >>]→[Ventilation >>], or select the [Calculations] QuickKey→
[Ventilation >>].
2. Enter values for calculation. If the monitor is connected to an anesthesia machine or a ventilator, the system
automatically loads the supported parameter values to the [Ventilation Calculation] window.
3. Select the [Calculate] button. The system performs a calculation per the current settings and displays the
calculated values.
 If a calculated value is outside the range, its background will highlight in yellow. You can select [Range] to
view its normal range in the unit field.
 Invalid values are displayed as [---].