Dräger Primus User Manual

Controlled ventilation
Volume mode, volume-controlled ventilation
Volume-controlled ventilation mode with fixed mandatory tidal
volume VT and frequency Freq., as well as with optional
synchronization activation and variable pressure support for
spontaneous breathing efforts (optional).
The respiratory cycle is defined through the frequency Freq.,
the inspiratory time TINSP, the magnitude of the inspiration
flow, the inspiratory pause time TIP:TINSP and the tidal volume
VT. Synchronization and pressure support are controlled by
the sensitivity of the flow trigger and the level of APPS. The
maximum time interval for controlled ventilation is set via the
frequency. In order to maintain a constant frequency, a time
interval triggered prematurely is compensated in the next
cycle.
Synchronized volume-controlled ventilation
Synchronization is activated by entering a value for the trigger
sensitivity. This can be defined via the soft key »extra
settings«.
1 Press the soft key »extra settings«. The trigger sensitivity
»Trigger« is displayed.
2 Press the soft key »Triggers. The last value set appears as
default value when the key is activated.
@ Set and confirm the trigger sensitivity with the rotary knob.
When finally confirmed, the indication »sync« in the status
area of the ventilation mode lights up steadily instead of
flashing.
A ventilation stroke triggered by the patient is represented by a
continuous vertical black line in the pressure curve and in the
flow curve (trigger indicator). The active window for the stroke
triggered by the patient corresponds to the last 25 % of the
applicable expiratory time.
The actual trigger status is shown above the keys for the
ventilation parameters.
Instructions for Use Primus SW 2.n
Ventilation
Pressure
Fiow trigger Flowdrigger window
Trigger indicator Trigger indicator
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у 1 Αρ. 4:
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+ 4 +
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1
Time
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A р A,
1/Freq. 3
APps
on
Time [s]
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Dräger Primus Specifications

General

Type	Anesthesia Workstation
Oxygen Flush	Yes
Ventilation Modes	Pressure Support
Gas Supply	O2, Air, N2O
Vaporizers	Isoflurane, Sevoflurane, Halothane
Patient Monitoring	Airway Pressure
Backup Battery	Yes
Alarms	Apnea, Gas supply failure
Power Supply	AC Mains, Battery Backup