H E Y E R P a s i t h e c
42 / 106 HEYER Pasithec, Operator’s manual Rev. 0.2 Draft - 12/09
4.3 Start Manual Ventilation
Step 1: Before starting manual ventilation, connect the reservoir bag to the gas operation port and
ensure the APL valve setting is correct. The APL valve is used to adjust the pressure limit of the
breathing system during the manual ventilation period.
Step 2: Set the ventilation mode to “Manual”, or press the “MANUAL/AUTO" key. To use the reservoir
bag to perform manual ventilation if necessary, push the O
2
flush button to inflate the reservoir bag.
4.3.1 Stop Manual Ventilation
Set Ventilation Mode to STANDBY mode.
Manual ventilation can also be stopped by not pinching the reservoir bag or by pressing the
“MANUAL/AUTO" key, which will revert the system to mechanical ventilation.
4.4 Shutdown
Turn off gas supply and set the ventilation mode to “Standby” after the gas within the system is
emptied. Turn off the power.
4.5 Waveforms
1. Paw-t Waveform
Y-Axis: airway pressure; X-Axis: time. For more details, refer to section 10.8.6.
Figure 4-15 Paw-t waveform
2. Flow-t Waveform
Flow scale: -90~90 L/min.
Time-Axis: Positive inspiratory direction above 0 L/min level; minus expiratory direction below 0 L/min
level; no gas flow on 0 L/min level.
Figure 4-16 Flow-t waveform
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