Continuous Positive Airway Pressure
(CPAP) / Pressure Support
Checking for sufficient spontaneous breathing on
pressure gauge:
Patient must be capable of generating a negative
pressure of at least 2 cmH2O during inspiration.
1 Set knob »f« to 0.
2 Set switch for ventilator modes to SIMV/CPAP.
3 Set knob »PEEP« to desired level of positive airway
pressure.
NOTE: When set values are below 3 cmH2O, a
disconnection alarm is generated. Disconnections are
detected when pressure falls below the absolute thres-
hold of 3.0 cmH2O or when there is a sudden drop in
pressure of more than 5 cmH2O during CPAP.
For pressure support:
4 set knob »PS« higher than PEEP, as
appropriate. Pressure support will then be active
according to the difference in pressure levels between
Press. Supp. and PEEP.
NOTE: When Press. Supp. is set lower than PEEP, no
pressure support is provided
If apnea occurs, apnea ventilation is switched on at
f = 8 bpm:
5 Use knob »VT« to set tidal volume and
6 Use knob »Tinsp« to set inspiratory time.
When no breaths have been detected by the ventilator for
15 seconds, display shows warning message:
continuous audible alarm begins,
red alarm light starts flashing.
If ventilator does not detect an inspiratory effort after
another 15 seconds, apnea ventilation will begin - using a
fixed ventilator rate of 8 bpm and the values set for VT
and Tinsp. The display will then show:
Apnea ventilation
Apnea
WARNING !
Use CPAP mode only for patients who have suffi-
cient spontaneous breathing.
Continuous Positive Airway
Pressure (CPAP) / Pressure
Support
Operation
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Operating Instructions MicroVent
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