Philips Trilogy Evo Universal - Page 18

Instructions for Use | Therapy Modes and Controls
Overview 18
Mixed modes: breaths are spontaneous, assist-control, or mandatory.
• S/T: Spontaneous/timed ventilation – spontaneous breaths with pressure support and mandatory breaths with pressure control
• SIMV-PC: Synchronized intermittent mandatory ventilation (pressure control) – spontaneous breaths with pressure support, assist—
control breaths and mandatory breaths with pressure control
• SIMV-VC: Synchronized intermittent mandatory ventilation (volume control) – spontaneous breaths with pressure support, assist—
control breaths and mandatory breaths with volume control
Low Tidal Volume Therapy
For low tidal volume therapy, use the infant/pediatric external flow sensor. See the instructions included with the sensor.
When setting volumes greater than or equal to 50ml, use any circuit type.
When setting volumes greater than or equal to 35ml, use either the active flow or dual limb circuits.
The following pressure modes are available for patients who require a tidal volume less than 35ml:
• A/C-PC
• PSV
• S/T
• SIMV-PC
Therapy Mode Comparison Table
For all modes, the breath type varies based on time of patient inspiration. The breath type is always ventilator-initiated and mandatory when the
Trigger Type is set to Off.
Mode
Breath Types
Trigger Source
Inspiration
Cycle
Exhalation
Control Modes
A/C-PC
Assist-Control
Patient
Pressure Control +PEEP Inspiratory
Time
PEEP
Mandatory
Ventilator
(Breath Rate)
A/C-VC
Assist-Control
Patient
Tidal Volume
Inspiratory
Time
PEEP
Mandatory
Ventilator
(Breath Rate)
Spontaneous Modes
CPAP
Spontaneous
Patient
CPAP
Patient
CPAP
PSV Spontaneous Patient Pressure Support + PEEP Patient PEEP
Mixed Modes
S/T
Spontaneous
Patient
IPAP
Patient
EPAP
Mandatory
Ventilator
(Breath Rate)
Inspiratory
Time
SIMV-PC
Spontaneous Patient
Pressure Support + PEEP
Patient PEEP
Assist-Control
Patient
Pressure Control + PEEP Inspiratory
Time
PEEP
Mandatory
Ventilator
(Breath Rate)
SIMV-VC
Spontaneous Patient
Pressure Support + PEEP
Patient PEEP
Assist-Control
Patient
Tidal Volume Inspiratory
Time
PEEP
Mandatory
Ventilator
(Breath Rate)