Mindray BeneVision N1 User Manual

17 - 6 BeneVision N1 Patient Monitor Operator’s Manual
17.6 Ventilation Calculations
The monitor provides the ventilation calculation function and can save the results of up to 10 calculations, which
are displayed in groups.
17.6.1 Performing Ventilation Calculations
To perform ventilation calculations, follow this procedure:
1. Access ventilation calculation by either of the following ways:
◆ Select the Calculations quick key → Ventilation tab.
◆ Select the Main Menu quick key → from the Calculations column select Ventilation.
2. Enter the known values. For a patient who is being monitored, the currently measured values are
automatically taken. If the anesthesia machine or ventilator is connected, measured values for ventilation
calculation are also automatically entered.
3. Select
Calculate.
A calculated value greater than the normal upper limit is indicated by an up arrow “
↑”. A calculated value lower
than the normal lower limit is indicated by a down arrow “
↓”.
On the
Ventilation page, you can also perform the following operations:
■ Select Pressure Unit. Then corresponding parameter values will be automatically converted and updated
accordingly.
■ Select Range to show the normal range of each parameter.
17.6.2 Input Parameters for Ventilation Calculations
17.6.3 Calculated Parameters and Formulas for Ventilation Calculations
Input Parameter Label Unit
percentage fraction of inspired oxygen FiO
2
%
respiration rate RR rpm
partial pressure of mixed expiratory CO2 PeCO
2
mmHg, kPa
partial pressure of carbon dioxide in the arteries PaCO
2
mmHg, kPa
partial pressure of oxygen in the arteries PaO
2
mmHg, kPa
tidal volume TV ml
respiratory quotient RQ None
atmospheric pressure ATMP mmHg, kPa
Calculated Parameters Label Unit Formula
partial pressure of oxygen
in the alveoli
PAO
2
mmHg, kPa PAO
2
(mmHg) = [ATMP (mmHg) - 47 mmHg] ×
FiO
2
(%)/100 - PaCO
2
(mmHg) × [FiO
2
(%)/100
+ (1 - FiO
2
(%)/100)/RQ]
alveolar-arterial oxygen
difference
AaDO
2
mmHg, kPa AaDO
2
(mmHg) = PAO
2
(mmHg) - PaO
2
(mmHg)
oxygenation ratio Pa/FiO
2
mmHg, kPa Pa/FiO
2
(mmHg) = 100 × PaO
2
(mmHg)/FiO
2
(%)
arterial to alveolar oxygen
ratio
a/AO
2
%
a/AO
2
(%) = 100 × PaO
2
(mmHg)/PAO
2
(mmHg)
minute volume MV L/min MV (L/min) = [TV (ml) × RR (rpm)]/1000

Mindray BeneVision N1 Specifications

General

Brand	Mindray
Model	BeneVision N1
Category	Medical Equipment
Language	English