Mainstream CO2 monitoring
344 Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n
Description Cause CO2 waveform
Elevated waveform
baseline with
corresponding increase in
CO
2 level.
Rebreathing due to one of the
following causes:
– Disposable airway adapter is
used although the Cockpit is
configured for the reusable
adapter type
– Contaminated airway adapter
(dirty window)
–CO
2 zero drift
– Insufficient expiratory time
– Faulty expiratory valve
– Inadequate inspiratory flow
– Malfunction of a CO
2 absorber
system
– Partial rebreathing circuits
Change in slope of
ascending limb. Possible
absence of an alveolar
plateau.
Obstruction caused by one of the
following:
– Partial obstruction in expiratory
limb of breathing circuit
– Foreign matter in upper airway
– Partially kinked or occluded
artificial airway
– Herniated endotracheal or
tracheostomy tube cuff
– Bronchospasm
Elevated baseline, with
pronounced slope on
descending limb
– Faulty ventilator circuit valve
– Rebreathing (see above)
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