Ventilation
142 Instructions for Use Apollo SW 4.5n
Part Number: 9053586, 3rd edition
Pressure Support Ventilation
(Optional)
Figure 76. Respiratory Cycle - Pressure Support ModeThe Apollo has a pressure-assisted ventilation mode
for patients with spontaneous breathing.
Synchronization and Pressure Support for the
spontaneous breathing efforts are controlled by the
sensitivity of the flow trigger and by the level of ΔP
PS.
The rate at which the pressure curve rises is preset
by the rise time T
SLOPE. Refer to Figure 76.
The maximum inspiratory time for a spontaneous
breathing stroke varies according to age:
1.5 seconds for patients aged 4 years and younger,
and 4 seconds for patients over 4 years.
Inspiration is ended as soon as the current
inspiration flow drops below 25 % of the inspiratory
peak flow. Any leakage is compensated
simultaneously with the actual airway pressure.
Apnea ventilation can additionally be set with the
minimum frequency Freq
MIN. The ventilator is
automatically triggered by Freq
MIN if there is no
spontaneous breathing activity by the patient.
This is not a mandatory ventilation stroke by the
ventilator; the patient can end the stroke triggered by
the ventilator at any time by breathing spontaneously.
This stroke is not identified by a trigger indicator.
Apnea ventilation can also be deactivated again by
setting the Freq
MIN to “OFF”.
Pressure
Time [s]
Flow
T
SLOPE
Time [s]
1/Freq.
MIN
Trigger indicator
P
PS
Trigger indicator
Apnea
ventilation
Flow trigger
Flow trigger
No trigger
25%
25%
1/Freq.
MIN
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