CAE Healthcare Fidelis Lucina, User Manual

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Müse Parameter Descriptions
284
Positive End Expiratory Pressure (PEEP)
The PEEP parameter specifies the amount of positive end expiratory pressure applied during
mechanical ventilation. Setting this parameter results in clinically appropriate intrathoracic pressures
and hemodynamic responses.
Default: 0.0 cmH
2
O
Range: 0.0 cmH
2
O - 25.0 cmH
2
O
O
2
Consumption
The O
2
Consumption parameter is used to change the rate of consumption of oxygen and production
of carbon dioxide. When O
2
Consumption is increased and used with increased Shunt Fraction ,
profound levels of hypoxia can be achieved rapidly.
Default : 250 mL per minute
Range : 0 mL per minute - 2000 mL per minute
CO
2
Production Factor
The CO
2
Production Factor parameter allows for the manipulation of metabolic CO
2
production to
simulate a variety of pathophysiological conditions. CO
2
production is determined by the O
2
Consumption and Respiratory Quotient settings. A CO
2
Production Factor value of 2 doubles the CO
2
production, while a value of 0.5 decreases the CO
2
production by 50%.
Default: 1
Range : 0.50 - 4.00
PaCO
2
Set-point
The PaCO
2
Set-point parameter is a set-point for PaCO
2
. The control-of-breathing model adjusts tidal
volume and respiratory rate in order to bring the PaCO
2
toward this set-point. Factors that influence the
success of this control effort include baseline tidal volume, baseline respiratory rate, respiratory gain,
O
2
consumption, respiratory quotient, lung compliances, chest wall compliance, bronchial resistances,
the presence of artificial airways in the simulator and the inspired gas mixture.
When the PaCO
2
Set-point is set to a new value, the physiological controls adjust the simulator’s
respiratory pattern in an attempt to attain the desired set-point. For example, when the set-point is
raised from 40 to 50 mmHg, there is a transitory decrease in respiratory rate and tidal volume, as the
physiological controls attempt to drive the PaCO
2
toward 50 mmHg. When the PaCO
2
reaches the new
set-point, the simulator’s respiratory rate and tidal volume should return to normal values.
Default : 40 mmHg
Range : 20.0 mmHg - 70.0 mmHg