Mindray iMEC8 Vet - Entered Parameters; Calculated Parameters and Formulas; Hemodynamic Calculations; Performing Calculations

18-5
In the [Ventilation Calculation] window, you can:
 Change the pressure unit by selecting [Press. Unit] and then selecting the appropriate setting. Corresponding
pressure values shall convert and update automatically.
 Trigger a recording by selecting the [Record] button. The currently displayed ventilation calculations are printed
out by the recorder.
 Review the previously performed calculations by selecting [Review].
18.4.2 Entered Parameters
Abbreviation Unit Full spelling
FiO
2
% percentage fraction of inspired oxygen
RR rpm respiration rate
PeCO
2
mmHg partial pressure of mixed expiratory CO2
PaCO
2
mmHg partial pressure of carbon dioxide in the arteries
PaO
2
mmHg partial pressure of oxygen in the arteries
TV ml tidal volume
RQ None respiratory quotient
ATMP mmHg atmospheric pressure
18.4.3 Calculated Parameters and Formulas
Abbreviation Unit Full spelling Formula
PAO
2
mmHg
partial pressure of oxygen in the
alveoli
(ATMP－47) × FiO
2
/100 －PaCO
2
× [FiO
2
/100 ＋ (1
－FiO
2
/100) / RQ ]
AaDO
2
mmHg alveolar-arterial oxygen difference PAO
2
－ PaO
2
Pa/FiO
2
mmHg oxygenation ratio 100 × PaO
2
/ FiO
2
a/AO
2
% arterial to alveolar oxygen ratio 100 × PaO
2
/ PAO
2
MV L/min minute volume (TV × RR) / 1000
Vd ml
volume of physiological dead
space
TV × (1 － PeCO
2
/ PaCO
2
)
Vd/Vt %
physiologic dead space in percent
of tidal volume
100 × Vd/TV
VA L/min alveolar volume (TV－ Vd) × RR / 1000
18.5 Hemodynamic Calculations
18.5.1 Performing Calculations
To perform a hemodynamic calculation:
1. Select [Main Menu]→[Calculations >>]→[Hemodynamic >>], or select the [Calculations] QuickKey→
[Hemodynamic >>].
2. Enter values for calculation.
 For a patient who is being monitored, [HR], [Art mean], [PA mean] and [CVP] are automatically taken from
the currently measured values. If the monitor does not provide these values, their fields appear blank.