Philips V200 Manuel D’Utilisation

REF 1057983 A

Respironics V200 Ventilator Operator’s Manual

The ventilator allows the operator to calculate Auto-PEEP from an expiratory 
hold procedure. This function is active only at the end of a mandatory breath 
and is not available in the emergency ventilation mode. Expiratory hold is 
initiated by pressing the EXP HOLD key on the front panel. When exhalation 
ends in the breath during which the EXP HOLD key is being pressed, an 
expiratory hold maneuver will begin and will continue only as long as the key is 
pressed. During the expiratory hold maneuver, the screen shown in Figure 8-35 
below will appear.

While the EXP HOLD key is held, the exhalation valve and the air and O

2

 valves 

will be closed. During this period there is no flow of gas into or out of the 
patient circuit from the ventilator. You can monitor the airway pressure by 
watching the EXPIRATORY PAUSE PRESSURE digital display, and by watching 
the pressure versus time waveform. When you determine the airway pressure 
has stabilized, the EXP HOLD key should be released. If the key is held for 5 
seconds, the ventilator will automatically terminate the maneuver and perform 
the calculation if stability was achieved. The ventilator then calculates Auto-
PEEP as shown in the equation below:

•

Auto-PEEP = Expiratory Pause Pressure - End Expiratory Pressure

NOTE:

NOTE:

Pressure 
versus time 
waveform.